CN204042508U - A kind of LEDbulb lamp - Google Patents
A kind of LEDbulb lamp Download PDFInfo
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- CN204042508U CN204042508U CN201420415261.5U CN201420415261U CN204042508U CN 204042508 U CN204042508 U CN 204042508U CN 201420415261 U CN201420415261 U CN 201420415261U CN 204042508 U CN204042508 U CN 204042508U
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Abstract
The utility model discloses a kind of LEDbulb lamp, it comprises lamp holder, the power storehouse of hollow, power supply module, radiator, LED light source module and diffuser, radiator is made up of with the heat radiation cylinder of the hollow be integrally formed on the bottom of cooling base the cooling base of the hollow exposed, the top of cooling base is provided with open top, power storehouse stretches in the heat dissipation cavity be made up of the inner chamber of cooling base and the inner chamber of heat radiation cylinder by the open top of cooling base, cooling base is connected with power storehouse, the bottom of cooling base is connected with the top of diffuser, thermal column body is arranged in the inner chamber of diffuser, the bottom of heat radiation cylinder is provided with the louvre of the inner chamber being communicated with its inner chamber and diffuser, louvre is communicated with the bottom opening of the power storehouse being arranged in heat dissipation cavity makes the inner chamber of power storehouse form power supply heat sinking passage, LED light source module is arranged on heat radiation cylinder, advantage is that the structure of radiator is simple, and parts machining is simple, and can meet the strong Spreading requirements of omnirange light.
Description
Technical field
The utility model relates to a kind of LED lamp, especially relates to a kind of LEDbulb lamp.
Background technology
Along with the fast development of LED illumination technology, increasing place uses LED as lighting source.LEDbulb lamp is as a kind of novel LED bulb, and also known as omnirange lamp or directionless lamp, it can utilize existing interface to substitute traditional room lighting incandescent lamp, saves resource to a great extent.For American Standard LEDbulb lamp, American Standard Energy Star will have issued LED illumination new standard the end of the year 2013, define the light distribution of omnirange lamp in a standard, require in this standard: within the scope of each 135 degree ~ 180 degree of the both sides of LED bulb, the luminous flux of LED bulb at least will reach 5% of whole lamp total light flux, within the scope of the side inferior segment 270 degree of LED bulb, namely require to have the large and feature be evenly distributed of luminous intensity, within the scope of 90 degree, LED bulb top, luminous flux can not be too little.
At present, LEDbulb lamp common on the market generally includes power supply module, LED light source module and radiator, and the amount of heat that power supply module and LED light source module produce is distributed by radiator.But, existing LEDbulb lamp is in order to satisfied heat radiation and light distribution requirements, usually more complicated heat spreader structures designed and large, this not only adds the difficulty of processing of radiator, and make the structure of power storehouse and the diffuser matched with radiator become complicated, finally cause parts machining difficulty large, whole lamp assembling is more difficult, and the distribution curve flux of whole lamp does not meet the Light distribation of incandescent lamp bulb yet in addition; On the other hand, the non-isolated power driving circuit that power supply module in existing LEDbulb lamp adopts generally is realized by the mode of driving chip driving power metal-oxide-semiconductor, if this non-isolated power driving circuit will have higher power supply conversion efficiency while requiring light modulation, then must select the driving chip of higher price, and need the peripheral circuit of more complicated and more components and parts, the price of the cost ratio pliotron of power MOS pipe is high simultaneously, and the average price of this non-isolated power driving circuit therefore can be caused very high.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of LEDbulb lamp, and its heat spreader structures is simple, volume is little, and the light distribution of whole lamp can meet the strong Spreading requirements of omnirange light, and the distribution curve flux of whole lamp is more close to the Light distribation of incandescent lamp bulb.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of LEDbulb lamp, comprise lamp holder, the power storehouse of hollow, be arranged at the power supply module in the inner chamber of described power storehouse, radiator, LED light source module and diffuser, it is characterized in that the top of described power storehouse is connected with described lamp holder, described radiator is made up of with the heat radiation cylinder of the hollow be integrally formed on the bottom of described cooling base the cooling base of the hollow exposed, described power storehouse stretches in the heat dissipation cavity be made up of the inner chamber of the inner chamber of described cooling base and described heat radiation cylinder by the open top of described cooling base, the bottom of described cooling base is connected with the top of described diffuser, described thermal column body is arranged in the inner chamber of described diffuser, the bottom of described heat radiation cylinder is provided with the louvre of the inner chamber being communicated with its inner chamber and described diffuser, described louvre is communicated with the bottom opening of the described power storehouse being arranged in described heat dissipation cavity makes the inner chamber of described power storehouse form power supply heat sinking passage, on the bottom that described LED light source module is arranged at described heat radiation cylinder and surrounding sidewall.
Described heat radiation cylinder is wholely set the light source mount pad in pentagonal prism structure, described LED light source module is made up of the LED lamp bead of flexible PCB and specular removal, described flexible circuit board design becomes the installation mesa structure in pentagonal prism structure suitable with described light source mount pad, described installation mesa structure is fixed on outside described light source mount pad, described installation mesa structure has a bottom mounting surfaces and five side installed surfaces, and each installed surface of described installation mesa structure is all provided with described LED lamp bead; At this, by being wholely set light source mount pad on heat radiation cylinder, and light source mount pad is pentagonal prism structure, and on light source mount pad, fix the installation mesa structure in pentagonal prism structure, can guarantee that the distribution curve flux of whole lamp is more close to the Light distribation of incandescent lamp bulb further; When specifically assembling, by heat conduction bonded adhesives, installation mesa structure is fixed on light source mount pad, easy for installation.
The quantity of the described LED lamp bead that each installed surface of described installation mesa structure is installed is identical; At this, by limiting the quantity of the LED lamp bead that each installed surface is installed, can guarantee that luminescence is evenly distributed.
Described power storehouse is made up of the lamp holder mount pad of hollow and the power supply lid of hollow, the top of described lamp holder mount pad is connected with described lamp holder, the bottom of described lamp holder mount pad is connected with the top of described power supply lid, and the bottom opening of described power storehouse is arranged on the bottom of described power supply lid; The outer wall of described lamp holder mount pad is circumferentially provided with annular top-joining part, the top of described cooling base and described annular top-joining part apical grafting, the inwall of described cooling base is connected with the bottom outer wall of described lamp holder mount pad, and described power supply lid is arranged in the inner chamber of described heat radiation cylinder; At this, make the top of cooling base and annular top-joining part apical grafting, and make power supply lid be arranged in the inner chamber of heat radiation cylinder, like this on the basis ensureing radiating effect, make the volume of whole lamp less.
The inwall of described lamp holder mount pad is provided with the fixed mount for fixing described power supply module; The perisporium of described lamp holder mount pad bottom it is provided with at least two draw-in grooves, and the top of described power supply lid is provided with at least two buckles, and described buckle matches with described draw-in groove; At this, by being arranged at draw-in groove on lamp holder mount pad and the connection being arranged at buckle that power supply covers and realizing lamp holder mount pad and power supply lid, simplify assembling.
The inwall applying glue of described cooling base and the bottom outer wall of described lamp holder mount pad screw assembling; This assembling mode is simple, reliable.
Described diffuser is that integral blow forms, the main header casing mouth edge of described diffuser integrally stretches out and is provided with annular card article, the bottom one of described cooling base is extended annular projection, space between the inwall of described annular projection and the outer wall of described heat radiation cylinder forms the annular chamber being used for stretching into for the top of described diffuser, the inwall of described annular projection circumferentially offers annular slot, and described annular card article matches with described annular slot; At this, diffuser is formed by blowing, and the profile of whole lamp can be made closer to incandescent lamp, and cooling base and diffuser coordinating to fasten and be assembled by annular slot and annular card article, assemble simple and direct.
Described power supply module comprises non-isolated power driving circuit, and described non-isolated power driving circuit is by for suppressing the LC filter circuit of electromagnetic interference, forming for alternating current being converted to the rectifier bridge of Rectified alternating current, the passive damping circuit being used for the peak current suppressing each cycle too high, the chip controls unit being used for the output current controlling described LED lamp bead, BUCK switch topology unit and being used for the open loop protection circuit that protection power source is not damaged when described LED lamp bead is opened a way, the input of described LC filter circuit connects power supply, described LC filter circuit is connected with piezo-resistance, the output of described LC filter circuit is connected with the input of described rectifier bridge, the output of described rectifier bridge is connected with the input of described passive damping circuit, the output of described passive damping circuit is connected with the input of described chip controls unit, the output of described chip controls unit is connected with the input of described BUCK switch topology unit, the output of described BUCK switch topology unit is connected with the input of described open loop protection circuit, the output of described open loop protection circuit is connected with described LED lamp bead, this non-isolated power driving circuit is compared with conventional driving circuit, it is cheap, simplicity of design, good to light modulator compatibility, the dimming scope that can realize is 0.1% ~ 100%, power supply conversion efficiency is high, constant current accuracy is high, and its reference precision can reach ± and 2%, operating current is ultralow, by exclusive constant current compensation way, the impact of the factor such as inductance, input voltage on output current can be eliminated.
Described LC filter circuit comprises the 6th electric capacity and the second inductance, and described rectifier bridge comprises the first diode, second diode, 3rd diode and the 4th diode, described passive damping circuit comprises the 12 resistance, 6th resistance, 7th resistance and the 4th electric capacity, described chip controls unit comprises driving chip, 4th resistance, 7th electric capacity, 6th diode and the 9th resistance, 1st pin of described driving chip is chip operating voltage incoming end, 2nd pin of described driving chip is earth terminal, 3rd pin of described driving chip is current sample end, 4th pin of described driving chip is pliotron base stage control end, 5th pin and the 6th pin of described driving chip are empty pin, and described BUCK switch topology unit comprises the 3rd resistance, 3rd electric capacity, 5th resistance, 18 resistance, 8th electric capacity, 5th commutation diode, first electric capacity, second electric capacity, tenth resistance, 11 resistance, 7th diode, first PNP triode, second Zener diode, second resistance and transformer, described open loop protection circuit comprises the first resistance, first Zener diode, 3rd Zener diode, 8th resistance, 8th diode and the 2nd NPN triode, one end of the 6th described electric capacity connects the live wire of power supply, the other end of the 6th described electric capacity connects the zero line of power supply, piezo-resistance is connected in parallel between the two ends of the 6th described electric capacity, one end of the second described inductance connects the zero line of power supply, the negative terminal of the first described diode is connected with the public connecting end of the anode of the second described diode one end with the 6th described electric capacity, the anode of the 3rd described diode is connected with the other end of the second described inductance with the public connecting end of the negative terminal of the 4th described diode, the negative terminal of the second described diode is connected with one end of the 4th described electric capacity with the public connecting end of the negative terminal of the 3rd described diode, the public connecting end ground connection of the anode of the first described diode and the anode of the 4th described diode, one end of the 4th described electric capacity is connected with the 5th electric capacity, the other end ground connection of the 5th described electric capacity, the other end of the 4th described electric capacity respectively with one end of the 12 described resistance, one end of the 6th described resistance is connected with one end of the 7th described resistance, the other end of the 12 described resistance, the other end of the 6th described resistance and the equal ground connection of the other end of the 7th described resistance, between the public connecting end that the 4th described resistance is connected to the negative terminal of the second described diode and the negative terminal of the 3rd described diode and the 1st pin of described driving chip, the 7th described electric capacity is connected to the 1st of described driving chip the between pin and ground, 1st pin of described driving chip connects operating voltage, 2nd pin ground connection of described driving chip, 3rd pin of described driving chip is connected with the negative terminal of the 7th described diode by the 9th described resistance, 4th pin of described driving chip is connected with the negative terminal of the 6th described diode, the anode of the 6th described diode is connected with the base stage of the first described PNP triode, 5th pin and the 6th pin of described driving chip are unsettled,Between the public connecting end that the 3rd described resistance is connected to the negative terminal of the second described diode and the negative terminal of the 3rd described diode and the anode of the 6th described diode, the public connecting end of the anode of the 3rd described resistance and the 6th described diode and one end of the 3rd described electric capacity, the other end of the 3rd described electric capacity is connected in series the 5th described resistance and the 18 described resistance successively, the other end of the 18 described resistance is connected with one end of the secondary coil of described transformer, the 8th described electric capacity is connected to the negative terminal of the second described diode and between the public connecting end of negative terminal of the 3rd described diode and one end of the primary coil of described transformer, the 8th described electric capacity is connected with the colelctor electrode of the first described PNP triode and the anode of the 5th described commutation diode respectively with the public connecting end of one end of the primary coil of described transformer, the public connecting end of the negative terminal of the negative terminal of the five or two described commutating pole pipe and the negative terminal of the second described diode and the 3rd described diode is connected, the emitter stage of the first described PNP triode is connected with the anode of the 7th described diode, the negative terminal of the 7th described diode is connected with one end of the tenth described resistance and one end of the 11 described resistance respectively, the other end of the tenth described resistance and the equal ground connection of the other end of the 11 described resistance, the base stage of the first described PNP triode is connected with the negative terminal of the second described Zener diode, the positive ending grounding of the second described Zener diode, the first described electric capacity is connected to the negative terminal of the second described diode and between the public connecting end of negative terminal of the 3rd described diode and the other end of the primary coil of described transformer, between the public connecting end that the second described electric capacity is connected to the other end of the primary coil of the first described electric capacity and described transformer and ground, the other end ground connection of the secondary coil of described transformer, between the public connecting end that the first described resistance is connected to the negative terminal of the second described diode and the negative terminal of the 3rd described diode and the negative terminal of the first described Zener diode, the anode of the first described Zener diode is connected with the negative terminal of the 3rd described Zener diode, the anode of the 3rd described Zener diode is connected with one end of the 8th described resistance and the emitter stage of the 2nd described NPN triode respectively, the colelctor electrode of the 2nd described NPN triode is connected with the anode of the 8th described diode, the negative terminal of the 8th described diode connects operating voltage, the base stage of the 2nd described NPN triode is connected with the other end of the 8th described resistance, the base stage of the 2nd described NPN triode is connected with the other end of the primary coil of described transformer with the public connecting end of the other end of the 8th described resistance, the second described resistance is connected between the public connecting end of the other end of the public connecting end of the negative terminal of the second described diode and the negative terminal of the 3rd described diode and the base stage of the 2nd described NPN triode and the 8th described resistance, the negative terminal of the second described diode is connected with the anode of described LED lamp bead with the public connecting end of the negative terminal of the 3rd described diodeThe base stage of the 2nd described NPN triode is connected with the negative terminal of described LED lamp bead with the public connecting end of the other end of the 8th described resistance.
Described driving chip comprises line voltage compensation circuit, for eliminating the lead-edge-blanking circuit of the spike burr signal produced when power device is opened, for generation of the peak detection circuit of the signal of switch-off power device, the shutoff holding circuit of off state is transitioned into from saturation state for making power device, NMOS tube, described line voltage compensation circuit is made up of the 4th Zener diode, described lead-edge-blanking circuit is by the first comparator, first not gate, second not gate, 3rd not gate and two inputs form with door, described peak detection circuit is made up of the second comparator, described shutoff holding circuit is by the 4th not gate, one or two input nand gate, 5th not gate, 6th not gate, 7th not gate and the two or two input nand gate composition, the negative terminal of the 4th described Zener diode is the 1st pin of described driving chip, the anode of the 4th described Zener diode is the 3rd pin of described driving chip, the anode of the 4th described Zener diode is connected with the in-phase input end of the first described comparator and the in-phase input end of the second described comparator respectively, the inverting input of the first described comparator accesses the first reference voltage, the output of the first described comparator inputs with the input and described two of the first described not gate respectively and is connected with door input, the output of the first described not gate is connected with the input of the second described not gate, the output of the second described not gate is connected with the input of the 3rd described not gate, the output and described two of the 3rd described not gate inputs and is connected with another input of door, two described inputs are connected with an input of the one or two described input nand gate with the output of door, the inverting input of the second described comparator accesses the second reference voltage, the output of the second described comparator is connected with the input of the 4th described not gate, the output of the 4th described not gate is connected with another input of the one or two described input nand gate and an input of the two or two described input nand gate respectively, the output of the one or two described input nand gate is connected with the input of the 5th described not gate, the output of the 5th described not gate is connected with the input of the 6th described not gate, the output of the 6th described not gate is connected with the input of the 7th described not gate, the output of the 7th described not gate is connected with another input of the two or two described input nand gate, the output of the two or two described input nand gate is connected with the grid of described NMOS tube, the drain electrode of described NMOS tube is the 4th pin of described driving chip, the source electrode of described NMOS tube is the 2nd pin of described driving chip.
Compared with prior art, the utility model has the advantage of:
1) the utility model by arranging a heat radiation cylinder on cooling base, and the inner chamber of cooling base forms a heat dissipation cavity with the inner chamber of heat radiation cylinder, the heat loss through radiation of heat radiation cylinder can be made full use of like this to improve radiating effect, and be positioned at diffuser due to thermal column body, therefore the exposed area of radiator is significantly decreased, thus improve the area of whole lamp bright dipping, make the distribution curve flux of whole lamp more close to the Light distribation of incandescent lamp bulb.
2) in the utility model, radiator is made up of with the heat radiation cylinder of the hollow be integrally formed on the centre position, bottom of cooling base the cooling base of the hollow exposed, the top of cooling base is provided with open top, the bottom of heat radiation cylinder is provided with the louvre of the inner chamber being communicated with its inner chamber and diffuser, the structure of this radiator is simple, volume is little, parts machining is simple, and can meet the strong Spreading requirements of omnirange light.
3) form by screwing assembly connection between cooling base and lamp holder mount pad in the utility model, and by the connection on the inwall of cooling base between applying glue reinforcement and lamp holder mount pad; The bottom of cooling base realizes being connected with the cooperation of annular card article by annular slot with the top of diffuser, and whole lamp is assembled without screw, thus it is simple that whole lamp is assembled, and can effectively enhance productivity.
4) the non-isolated power driving circuit in the utility model adopts the mode of cheap driving chip driving power triode to realize light modulation, utilize less peripheral circuit and less components and parts just can realize higher power supply conversion efficiency, that is, the circuit structure of non-isolated power driving circuit of the present utility model is simple, and it is good to light modulator compatibility, the dimming scope that can realize is 0.1% ~ 100%, power supply conversion efficiency is high, constant current accuracy is high, its reference precision can reach ± and 2%, operating current is ultralow, by exclusive constant current compensation way, inductance can be eliminated, the factors such as input voltage are on the impact of output current.
Accompanying drawing explanation
Fig. 1 is the general structure explosive view of LEDbulb lamp of the present utility model;
Fig. 2 is the general structure cross-sectional schematic of LEDbulb lamp of the present utility model;
Fig. 3 a is the structural representation of the lamp holder mount pad in LEDbulb lamp of the present utility model;
Fig. 3 b is the structural representation of the power supply lid in LEDbulb lamp of the present utility model;
Fig. 4 a is the general structure schematic diagram of the radiator in LEDbulb lamp of the present utility model;
Fig. 4 b is the general structure cross-sectional schematic of the radiator in LEDbulb lamp of the present utility model;
Fig. 5 is the general structure schematic diagram of the LED light source module in LEDbulb lamp of the present utility model;
The circuit theory diagrams of non-isolated power driving circuit of Fig. 6 for adopting in LEDbulb lamp of the present utility model;
Fig. 7 is the circuit diagram of driving chip;
Fig. 8 a is the waveform schematic diagram of three Nodes of lead-edge-blanking circuit in driving chip;
Fig. 8 b is the waveform schematic diagram of three Nodes of shutoff holding circuit in driving chip.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
A kind of LEDbulb lamp that the utility model proposes, as shown in Figures 1 to 5, it comprises lamp holder 1, the power storehouse 2 of hollow, be arranged at the power supply module (not shown) in the inner chamber of power storehouse 2, radiator 3, LED light source module 4 and diffuser 5, the top of power storehouse 2 is connected with lamp holder 1, the bottom of power storehouse 2 is provided with bottom opening, radiator 3 is made up of with the heat radiation cylinder 32 of the hollow be integrally formed on the centre position, bottom of cooling base 31 cooling base 31 of the hollow exposed, the outer wall of cooling base 31 is shiny surface, the top of cooling base 31 is provided with open top, power storehouse 2 stretches in the heat dissipation cavity 33 be made up of the inner chamber of cooling base 31 and the inner chamber of heat radiation cylinder 32 by the open top of cooling base 31, cooling base 31 is connected with power storehouse 2, the bottom of cooling base 31 is connected with the top of diffuser 5, heat radiation cylinder 32 is arranged in the inner chamber of diffuser 5, the bottom of heat radiation cylinder 32 is provided with the louvre 34 of the inner chamber being communicated with its inner chamber and diffuser 5, louvre 34 is communicated with the bottom opening of the power storehouse 2 being arranged in heat dissipation cavity 33 makes the inner chamber of power storehouse 2 form power supply heat sinking passage, LED light source module 4 is arranged on the heat radiation bottom of cylinder 32 and surrounding sidewall, and the luminous flux of the light making the LED lamp bead 42 in LED light source module 4 send within the scope of each 135 degree ~ 180 degree of the both sides of this LEDbulb lamp is more than 5% of the total light flux of this LEDbulb lamp.At this, cooling base 31 arranges a heat radiation cylinder 32, the heat loss through radiation of heat radiation cylinder 32 can be made full use of to improve radiating effect, and due to heat radiation cylinder 32 be positioned at diffuser 5, therefore the exposed area of radiator is significantly decreased, thus improve the area of whole lamp bright dipping, make the distribution curve flux of whole lamp more close to the Light distribation of incandescent lamp bulb.
In this particular embodiment, power storehouse 2 is made up of the lamp holder mount pad 21 of hollow and the power supply lid 22 of hollow, the top of lamp holder mount pad 21 is connected with lamp holder 1, the inwall of lamp holder mount pad 21 is provided with the fixed mount 23 for fixed power source assembly, the bottom of lamp holder mount pad 21 is connected with the top of power supply lid 22, three draw-in grooves 24 can be set on the perisporium of lamp holder mount pad 21 bottom it, the top of power supply lid 22 arranges three buckles 25, buckle 25 matches with draw-in groove 24, and the bottom opening of power storehouse 2 is arranged on the bottom of power supply lid 22; The outer wall of lamp holder mount pad 21 is circumferentially provided with annular top-joining part 26, the top of cooling base 31 and annular top-joining part 26 apical grafting, the inwall applying glue of cooling base 31 and the bottom outer wall of lamp holder mount pad 21 screw assembly connection, and power supply lid 22 is arranged in the inner chamber of heat radiation cylinder 32.
In this particular embodiment, heat radiation cylinder 32 is wholely set the light source mount pad 35 in pentagonal prism structure, LED light source module 4 is made up of the LED lamp bead 42 of flexible PCB 41 and specular removal, flexible PCB 41 is designed to the installation mesa structure in pentagonal prism structure suitable with light source mount pad 35, installing mesa structure is fixed on outside light source mount pad 35, mesa structure is installed there are a bottom mounting surfaces and five side installed surfaces, each installed surface of installation mesa structure is all provided with LED lamp bead 42.LED lamp bead 42 selects the LED lamp bead of specular removal in the specific implementation, is the LED lamp bead of 135 ~ 140lm/W as selected light efficiency.
Specifically adding man-hour, requiring that the quantity of installing the LED lamp bead 42 that each installed surface of mesa structure is installed is identical, as all installed five LED lamp pearls, uniform light can be guaranteed further like this.
In this particular embodiment, diffuser 5 forms for integral blow, the shape of whole lamp can be made close to 60 watts of incandescent lamp bulbs of A19 size, the main header casing mouth edge of diffuser 5 integrally stretches out and is provided with annular card article 51, the bottom one of cooling base 31 is extended annular projection 36, space between the inwall of annular projection 36 and the outer wall of heat radiation cylinder 32 forms the annular chamber 37 being used for stretching into for the top of diffuser 5, the inwall of annular projection 36 circumferentially offers annular slot 38, and annular card article 51 matches with annular slot 38.
LEDbulb lamp of the present utility model is by being designed to pentagonal prism structure by light source mount pad 35, flexible PCB 41 is designed to the installation mesa structure in pentagonal prism structure suitable with light source mount pad 35 simultaneously, be equipped with the alveolitoid of the diffuser 5 of blowing again, can ensure that distribution curve flux and incandescent lamp reach consistent further, when meeting American Standard Energy Star, luminescence can be made more evenly soft, further increase optics and enjoy.
In this particular embodiment, power supply module comprises non-isolated power driving circuit, and non-isolated power driving circuit is by for suppressing the LC filter circuit of electromagnetic interference, forming for alternating current being converted to the rectifier bridge of Rectified alternating current, the passive damping circuit being used for the peak current suppressing each cycle too high, the chip controls unit being used for controlling the output current of LED lamp bead, BUCK switch topology unit and being used for the open loop protection circuit that protection power source is not damaged when LED lamp bead is opened a way; The input of LC filter circuit connects power supply; LC filter circuit is connected with piezo-resistance; the output of LC filter circuit is connected with the input of rectifier bridge; the output of rectifier bridge is connected with the input of passive damping circuit; the output of passive damping circuit is connected with the input of chip controls unit; the output of chip controls unit is connected with the input of BUCK switch topology unit; the output of BUCK switch topology unit is connected with the input of open loop protection circuit, and the output of open loop protection circuit is connected with LED lamp bead 42.
As shown in Figure 6, the concrete structure of non-isolated power driving circuit is: LC filter circuit comprises the 6th electric capacity C6 and the second inductance L 2, and rectifier bridge comprises the first diode D1, second diode D2, 3rd diode D3 and the 4th diode D4, passive damping circuit comprises the 12 resistance R12, 6th resistance R6, 7th resistance R7 and the 4th electric capacity C4, chip controls unit comprises driving chip IC, 4th resistance R4, 7th electric capacity C7, 6th diode D6 and the 9th resistance R9, 1st pin of driving chip IC is chip operating voltage incoming end, 2nd pin of driving chip IC is earth terminal, 3rd pin of driving chip IC is current sample end, 4th pin of driving chip IC is pliotron base stage control end, 5th pin and the 6th pin of driving chip IC are empty pin, and BUCK switch topology unit comprises the 3rd resistance R3, 3rd electric capacity C3, 5th resistance R5, 18 resistance R18, 8th electric capacity C8, 5th commutation diode D5, first electric capacity C1, second electric capacity C2, tenth resistance R10, 11 resistance R11, 7th diode D7, first PNP triode Q1, second Zener diode ZD2, second resistance R2 and transformer T1, open loop protection circuit comprises the first resistance R1, first Zener diode ZD1, 3rd Zener diode ZD3, 8th resistance R8, 8th diode D8 and the 2nd NPN triode Q2, one end of 6th electric capacity C6 is connected with the live wire of power supply, the other end of the 6th electric capacity C6 is connected with the zero line of power supply, piezo-resistance RV1 is connected in parallel between the two ends of the 6th electric capacity C6, one end of second inductance L 2 is connected with the zero line of power supply, the negative terminal of the first diode D1 is connected with one end of the 6th electric capacity C6 with the public connecting end of the anode of the second diode D2, the anode of the 3rd diode D3 is connected with the other end of the second inductance L 2 with the public connecting end of the negative terminal of the 4th diode D4, the negative terminal of the second diode D2 is connected with one end of the 4th electric capacity C4 with the public connecting end of the negative terminal of the 3rd diode D3, the public connecting end ground connection of the anode of the first diode D1 and the anode of the 4th diode D4, one end of 4th electric capacity C4 is connected with the 5th electric capacity C5, the other end ground connection of the 5th electric capacity C5, the other end of the 4th electric capacity C4 respectively with one end of the 12 resistance R12, one end of 6th resistance R6 is connected with one end of the 7th resistance R7, the other end of the 12 resistance R12, the other end of the 6th resistance R6 and the equal ground connection of the other end of the 7th resistance R7, between the public connecting end that 4th resistance R4 is connected to the negative terminal of the second diode D2 and the negative terminal of the 3rd diode D3 and the 1st pin of driving chip IC, 7th electric capacity C7 is connected to the 1st of driving chip IC the between pin and ground, 1st pin of driving chip IC connects operating voltage, the 2nd pin ground connection of driving chip IC, 3rd pin of driving chip IC is connected with the negative terminal of the 7th diode D7 by the 9th resistance R9, 4th pin of driving chip IC is connected with the negative terminal of the 6th diode D6, the anode of the 6th diode D6 is connected with the base stage of the first PNP triode Q1, 5th pin and the 6th pin of driving chip IC are unsettled, between the public connecting end that 3rd resistance R3 is connected to the negative terminal of the second diode D2 and the negative terminal of the 3rd diode D3 and the anode of the 6th diode D6, the public connecting end of the anode of the 3rd resistance R3 and the 6th diode D6 and one end of the 3rd electric capacity C3, the other end of the 3rd electric capacity C3 is connected in series the 5th resistance R5 and the 18 resistance R18 successively, the other end of the 18 resistance R18 is connected with one end of the secondary coil of transformer T1, 8th electric capacity C8 is connected to the negative terminal of the second diode D2 and between the public connecting end of negative terminal of the 3rd diode D3 and one end of the primary coil of transformer T1, 8th electric capacity C8 is connected with the colelctor electrode of the first PNP triode Q1 and the anode of the 5th commutation diode D5 respectively with the public connecting end of one end of the primary coil of transformer T1, the public connecting end of the negative terminal of the negative terminal of the 5th commutation diode D5 and the negative terminal of the second diode D2 and the 3rd diode D3 is connected, the emitter stage of the first PNP triode Q1 is connected with the anode of the 7th diode D7, the negative terminal of the 7th diode D7 is connected with one end of the tenth resistance R10 and one end of the 11 resistance R11 respectively, the other end of the tenth resistance R10 and the equal ground connection of the other end of the 11 resistance R11, the base stage of the first PNP triode Q1 is connected with the negative terminal of the second Zener diode ZD2, the positive ending grounding of the second Zener diode ZD2, first electric capacity C1 is connected to the negative terminal of the second diode D2 and between the public connecting end of negative terminal of the 3rd diode D3 and the other end of the primary coil of transformer T1, between the public connecting end that second electric capacity C2 is connected to the other end of the primary coil of the first electric capacity C1 and transformer T1 and ground, the other end ground connection of the secondary coil of transformer T1, between the public connecting end that first resistance R1 is connected to the negative terminal of the second diode D2 and the negative terminal of the 3rd diode D3 and the negative terminal of the first Zener diode ZD1, the anode of the first Zener diode ZD1 is connected with the negative terminal of the 3rd Zener diode ZD3, the anode of the 3rd Zener diode ZD3 is connected with one end of the 8th resistance R8 and the emitter stage of the 2nd NPN triode Q2 respectively, the colelctor electrode of the 2nd NPN triode Q2 is connected with the anode of the 8th diode D8, the negative terminal of the 8th diode D8 connects operating voltage, the base stage of the 2nd NPN triode Q2 is connected with the other end of the 8th resistance R8, the base stage of the 2nd NPN triode Q2 is connected with the other end of the primary coil of transformer T1 with the public connecting end of the other end of the 8th resistance R8, second resistance R2 is connected between the public connecting end of the negative terminal of the second diode D2 and the negative terminal of the 3rd diode D3 and the public connecting end of the base stage of the 2nd NPN triode Q2 and the other end of the 8th resistance R8, the negative terminal of the second diode D2 is connected with the anode of LED lamp bead 42 with the public connecting end of the negative terminal of the 3rd diode D3, the base stage of the 2nd NPN triode Q2 is connected with the negative terminal of LED lamp bead 42 with the public connecting end of the other end of the 8th resistance R8.
In the present embodiment, as shown in Figure 7, driving chip IC comprises line voltage compensation circuit, for eliminating the lead-edge-blanking circuit of the spike burr signal produced when power device is opened, for generation of the peak detection circuit of the signal of switch-off power device, the shutoff holding circuit of off state is transitioned into from saturation state for making power device, NMOS tube N1, line voltage compensation circuit is made up of the 4th Zener diode ZD4, lead-edge-blanking circuit is by the first comparator Comp1, first not gate INV1, second not gate INV2, 3rd not gate INV3 and two input forms with door AY1, peak detection circuit is become by the second comparator bank C2, turn off holding circuit by the 4th not gate INV4, one or two input nand gate NAY1, 5th not gate INV5, 6th not gate INV6, 7th not gate INV7 and the two or two input nand gate NAY2 forms, the negative terminal of the 4th Zener diode ZD4 is the 1st pin of driving chip IC, the anode of the 4th Zener diode ZD4 is the 3rd pin of driving chip IC, the anode of the 4th Zener diode ZD4 is connected with the in-phase input end of the first comparator Comp1 and the in-phase input end of the second comparator Comp2 respectively, the inverting input of the first comparator Comp1 accesses the first reference voltage 240mV, the output of the first comparator Comp1 inputs with the input and two of the first not gate INV1 respectively and is connected with door AY1 input, the output of the first not gate INV1 is connected with the input of the second not gate INV2, the output of the second not gate INV2 is connected with the input of the 3rd not gate INV3, the output and two of the 3rd not gate INV3 inputs and is connected with another input of door AY1, two inputs are connected with an input of the one or two input nand gate NAY1 with the output of door AY1, the inverting input of the second comparator Comp2 accesses the second reference voltage 650mV, the output of the second comparator Comp2 is connected with the input of the 4th not gate INV4, the output of the 4th not gate INV4 is connected with another input of the one or two input nand gate NAY1 and an input of the two or two input nand gate NAY2 respectively, the output of the one or two input nand gate NAY1 is connected with the input of the 5th not gate INV5, the output of the 5th not gate INV5 is connected with the input of the 6th not gate INV6, the output of the 6th not gate INV6 is connected with the input of the 7th not gate INV7, the output of the 7th not gate INV7 is connected with another input of the two or two input nand gate NAY2, the output of the two or two input nand gate NAY2 is connected with the grid of NMOS tube N1, the drain electrode of NMOS tube N1 is the 4th pin of driving chip IC, the source electrode of NMOS tube N1 is the 2nd pin of driving chip IC.
At this, when power device the 2nd NPN triode Q2 opens, spike burr signal can be produced, this signal can produce misoperation to subsequent process circuit, therefore need lead-edge-blanking circuit to produce a T_leb time to be used for eliminating this burr signal, the operation principle of lead-edge-blanking circuit is: when the 2nd NPN triode Q2 opens, the power resistor voltage of cs end sampling compares with the first reference voltage V ref1, when being greater than Vref1, node 1 produces high level, this high level is after three grades of inverse delayed, make rising time elongated, see the waveform of node 2, the waveform of node 2 is again through a non-gate delay, be shaped to the waveform of node 3, the signal at node 1 place and the signal at node 3 place carry out and operation, T_leb signal can be obtained, oscillogram as shown in Figure 8 a, peak detection circuit detects the voltage peak of cs end, produces the signal of switch-off power device, with power device NMOS tube unlike, 2nd NPN triode Q2 is from saturation state to turning off completely, need and exit saturation time, therefore needing to turn off holding circuit provides a shutoff to hold time, NPN triode is allowed to have time enough to be transitioned into off state from saturation state, the operation principle turning off holding circuit is: the power resistor voltage of cs end sampling compares with the second reference voltage V ref2, when being greater than Vref2, node 4 produces low level, this low level is after two-stage inverse delayed, make rising time elongated, see the waveform of node 5, the waveform of node 5 is behind the door non-through three again, be shaped to the waveform of node 6, the signal at node 4 place and the signal at node 6 place carry out NOT-AND operation, and can obtain T_s_hold signal, oscillogram as shown in Figure 8 b.
In above-mentioned non-isolated power driving circuit, piezo-resistance RV1 is for suppressing surge voltage, tenth resistance R10 and the 11 resistance R11 is current sampling resistor, during BUCK switch topology cell operation, electric current is through the 3rd resistance R3, the base voltage of the first PNP triode Q1 is made to increase, first PNP triode Q1 opens, now the current direction of major loop is that in Fig. 6, solid arrow indication flows to, when electric current flows through transformer T1, the secondary coil generation current of transformer T1, the base voltage of the first PNP triode Q1 is made to increase further through the 3rd electric capacity C3, the 5th resistance R5, the 18 resistance R18, the complete conducting of the first PNP triode Q1, due to the effect of the 3rd electric capacity C3, the base current flowing through the first PNP triode Q1 slowly diminishes, the collector current of the first PNP triode Q1 is also diminished, form positive feedback, first PNP triode Q1 is turned off, and when the first PNP triode Q1 turns off, current direction such as the dotted arrow indication in Fig. 6 of major loop flows to, during open loop protection circuit work, when LED lamp bead 42 is opened a way, the voltage rise of the first electric capacity C1, during voltage stabilizing value more than the first Zener diode ZD1 and the 3rd Zener diode ZD3 of the voltage of the first electric capacity C1, first Zener diode ZD1 and the 3rd Zener diode ZD3 conducting, the voltage that on 8th resistance R8, dividing potential drop obtains is more than the cut-in voltage of the 2nd NPN triode Q2, make the 2nd NPN triode Q2 conducting, electric current is had from the first resistance R1 during the 2nd NPN triode Q2 conducting, first Zener diode ZD1, 3rd Zener diode ZD3, 2nd NPN triode Q2, 8th diode D8 enters the 1st pin of driving chip IC, serve the object of protection power source.
At this, adopt above-mentioned non-isolated power driving circuit driving power, effectively can improve the efficiency of whole lamp, reach more than 87%.
Its whole lamp power of LEDbulb lamp of the present utility model accomplishes nominal 8.5W, and its luminous flux just can reach more than 800lm, can substitute 60 watts of incandescent lamp bulbs.
Claims (10)
1. a LEDbulb lamp, comprise lamp holder, the power storehouse of hollow, be arranged at the power supply module in the inner chamber of described power storehouse, radiator, LED light source module and diffuser, it is characterized in that the top of described power storehouse is connected with described lamp holder, described radiator is made up of with the heat radiation cylinder of the hollow be integrally formed on the bottom of described cooling base the cooling base of the hollow exposed, described power storehouse stretches in the heat dissipation cavity be made up of the inner chamber of the inner chamber of described cooling base and described heat radiation cylinder by the open top of described cooling base, the bottom of described cooling base is connected with the top of described diffuser, described thermal column body is arranged in the inner chamber of described diffuser, the bottom of described heat radiation cylinder is provided with the louvre of the inner chamber being communicated with its inner chamber and described diffuser, described louvre is communicated with the bottom opening of the described power storehouse being arranged in described heat dissipation cavity makes the inner chamber of described power storehouse form power supply heat sinking passage, on the bottom that described LED light source module is arranged at described heat radiation cylinder and surrounding sidewall.
2. a kind of LEDbulb lamp according to claim 1, it is characterized in that the light source mount pad described heat radiation cylinder is wholely set in pentagonal prism structure, described LED light source module is made up of the LED lamp bead of flexible PCB and specular removal, described flexible circuit board design becomes the installation mesa structure in pentagonal prism structure suitable with described light source mount pad, described installation mesa structure is fixed on outside described light source mount pad, described installation mesa structure has a bottom mounting surfaces and five side installed surfaces, each installed surface of described installation mesa structure is all provided with described LED lamp bead.
3. a kind of LEDbulb lamp according to claim 2, is characterized in that the quantity of the described LED lamp bead that each installed surface of described installation mesa structure is installed is identical.
4. a kind of LEDbulb lamp according to any one of claim 1 to 3, it is characterized in that described power storehouse is made up of the lamp holder mount pad of hollow and the power supply lid of hollow, the top of described lamp holder mount pad is connected with described lamp holder, the bottom of described lamp holder mount pad is connected with the top of described power supply lid, and the bottom opening of described power storehouse is arranged on the bottom of described power supply lid; The outer wall of described lamp holder mount pad is circumferentially provided with annular top-joining part, the top of described cooling base and described annular top-joining part apical grafting, the inwall of described cooling base is connected with the bottom outer wall of described lamp holder mount pad, and described power supply lid is arranged in the inner chamber of described heat radiation cylinder.
5. a kind of LEDbulb lamp according to claim 4, the inwall that it is characterized in that described lamp holder mount pad is provided with the fixed mount for fixing described power supply module; The perisporium of described lamp holder mount pad bottom it is provided with at least two draw-in grooves, and the top of described power supply lid is provided with at least two buckles, and described buckle matches with described draw-in groove.
6. a kind of LEDbulb lamp according to claim 5, is characterized in that the inwall applying glue of described cooling base and the bottom outer wall of described lamp holder mount pad screw assembling.
7. a kind of LEDbulb lamp according to claim 6, it is characterized in that described diffuser is that integral blow forms, the main header casing mouth edge of described diffuser integrally stretches out and is provided with annular card article, the bottom one of described cooling base is extended annular projection, space between the inwall of described annular projection and the outer wall of described heat radiation cylinder forms the annular chamber being used for stretching into for the top of described diffuser, the inwall of described annular projection circumferentially offers annular slot, described annular card article matches with described annular slot.
8. a kind of LEDbulb lamp according to claim 7, it is characterized in that described power supply module comprises non-isolated power driving circuit, described non-isolated power driving circuit is by for suppressing the LC filter circuit of electromagnetic interference, forming for alternating current being converted to the rectifier bridge of Rectified alternating current, the passive damping circuit being used for the peak current suppressing each cycle too high, the chip controls unit being used for the output current controlling described LED lamp bead, BUCK switch topology unit and being used for the open loop protection circuit that protection power source is not damaged when described LED lamp bead is opened a way, the input of described LC filter circuit connects power supply, described LC filter circuit is connected with piezo-resistance, the output of described LC filter circuit is connected with the input of described rectifier bridge, the output of described rectifier bridge is connected with the input of described passive damping circuit, the output of described passive damping circuit is connected with the input of described chip controls unit, the output of described chip controls unit is connected with the input of described BUCK switch topology unit, the output of described BUCK switch topology unit is connected with the input of described open loop protection circuit, the output of described open loop protection circuit is connected with described LED lamp bead.
9. a kind of LEDbulb lamp according to claim 8, it is characterized in that described LC filter circuit comprises the 6th electric capacity and the second inductance, described rectifier bridge comprises the first diode, second diode, 3rd diode and the 4th diode, described passive damping circuit comprises the 12 resistance, 6th resistance, 7th resistance and the 4th electric capacity, described chip controls unit comprises driving chip, 4th resistance, 7th electric capacity, 6th diode and the 9th resistance, 1st pin of described driving chip is chip operating voltage incoming end, 2nd pin of described driving chip is earth terminal, 3rd pin of described driving chip is current sample end, 4th pin of described driving chip is pliotron base stage control end, 5th pin and the 6th pin of described driving chip are empty pin, and described BUCK switch topology unit comprises the 3rd resistance, 3rd electric capacity, 5th resistance, 18 resistance, 8th electric capacity, 5th commutation diode, first electric capacity, second electric capacity, tenth resistance, 11 resistance, 7th diode, first PNP triode, second Zener diode, second resistance and transformer, described open loop protection circuit comprises the first resistance, first Zener diode, 3rd Zener diode, 8th resistance, 8th diode and the 2nd NPN triode, one end of the 6th described electric capacity connects the live wire of power supply, the other end of the 6th described electric capacity connects the zero line of power supply, piezo-resistance is connected in parallel between the two ends of the 6th described electric capacity, one end of the second described inductance connects the zero line of power supply, the negative terminal of the first described diode is connected with the public connecting end of the anode of the second described diode one end with the 6th described electric capacity, the anode of the 3rd described diode is connected with the other end of the second described inductance with the public connecting end of the negative terminal of the 4th described diode, the negative terminal of the second described diode is connected with one end of the 4th described electric capacity with the public connecting end of the negative terminal of the 3rd described diode, the public connecting end ground connection of the anode of the first described diode and the anode of the 4th described diode, one end of the 4th described electric capacity is connected with the 5th electric capacity, the other end ground connection of the 5th described electric capacity, the other end of the 4th described electric capacity respectively with one end of the 12 described resistance, one end of the 6th described resistance is connected with one end of the 7th described resistance, the other end of the 12 described resistance, the other end of the 6th described resistance and the equal ground connection of the other end of the 7th described resistance, between the public connecting end that the 4th described resistance is connected to the negative terminal of the second described diode and the negative terminal of the 3rd described diode and the 1st pin of described driving chip, the 7th described electric capacity is connected to the 1st of described driving chip the between pin and ground, 1st pin of described driving chip connects operating voltage, 2nd pin ground connection of described driving chip, 3rd pin of described driving chip is connected with the negative terminal of the 7th described diode by the 9th described resistance, 4th pin of described driving chip is connected with the negative terminal of the 6th described diode, the anode of the 6th described diode is connected with the base stage of the first described PNP triode, 5th pin and the 6th pin of described driving chip are unsettled,Between the public connecting end that the 3rd described resistance is connected to the negative terminal of the second described diode and the negative terminal of the 3rd described diode and the anode of the 6th described diode, the public connecting end of the anode of the 3rd described resistance and the 6th described diode and one end of the 3rd described electric capacity, the other end of the 3rd described electric capacity is connected in series the 5th described resistance and the 18 described resistance successively, the other end of the 18 described resistance is connected with one end of the secondary coil of described transformer, the 8th described electric capacity is connected to the negative terminal of the second described diode and between the public connecting end of negative terminal of the 3rd described diode and one end of the primary coil of described transformer, the 8th described electric capacity is connected with the colelctor electrode of the first described PNP triode and the anode of the 5th described commutation diode respectively with the public connecting end of one end of the primary coil of described transformer, the public connecting end of the negative terminal of the negative terminal of the 5th described commutation diode and the negative terminal of the second described diode and the 3rd described diode is connected, the emitter stage of the first described PNP triode is connected with the anode of the 7th described diode, the negative terminal of the 7th described diode is connected with one end of the tenth described resistance and one end of the 11 described resistance respectively, the other end of the tenth described resistance and the equal ground connection of the other end of the 11 described resistance, the base stage of the first described PNP triode is connected with the negative terminal of the second described Zener diode, the positive ending grounding of the second described Zener diode, the first described electric capacity is connected to the negative terminal of the second described diode and between the public connecting end of negative terminal of the 3rd described diode and the other end of the primary coil of described transformer, between the public connecting end that the second described electric capacity is connected to the other end of the primary coil of the first described electric capacity and described transformer and ground, the other end ground connection of the secondary coil of described transformer, between the public connecting end that the first described resistance is connected to the negative terminal of the second described diode and the negative terminal of the 3rd described diode and the negative terminal of the first described Zener diode, the anode of the first described Zener diode is connected with the negative terminal of the 3rd described Zener diode, the anode of the 3rd described Zener diode is connected with one end of the 8th described resistance and the emitter stage of the 2nd described NPN triode respectively, the colelctor electrode of the 2nd described NPN triode is connected with the anode of the 8th described diode, the negative terminal of the 8th described diode connects operating voltage, the base stage of the 2nd described NPN triode is connected with the other end of the 8th described resistance, the base stage of the 2nd described NPN triode is connected with the other end of the primary coil of described transformer with the public connecting end of the other end of the 8th described resistance, the second described resistance is connected between the public connecting end of the other end of the public connecting end of the negative terminal of the second described diode and the negative terminal of the 3rd described diode and the base stage of the 2nd described NPN triode and the 8th described resistance, the negative terminal of the second described diode is connected with the anode of described LED lamp bead with the public connecting end of the negative terminal of the 3rd described diodeThe base stage of the 2nd described NPN triode is connected with the negative terminal of described LED lamp bead with the public connecting end of the other end of the 8th described resistance.
10. a kind of LEDbulb lamp according to claim 9, it is characterized in that described driving chip comprises line voltage compensation circuit, for eliminating the lead-edge-blanking circuit of the spike burr signal produced when power device is opened, for generation of the peak detection circuit of the signal of switch-off power device, the shutoff holding circuit of off state is transitioned into from saturation state for making power device, NMOS tube, described line voltage compensation circuit is made up of the 4th Zener diode, described lead-edge-blanking circuit is by the first comparator, first not gate, second not gate, 3rd not gate and two inputs form with door, described peak detection circuit is made up of the second comparator, described shutoff holding circuit is by the 4th not gate, one or two input nand gate, 5th not gate, 6th not gate, 7th not gate and the two or two input nand gate composition, the negative terminal of the 4th described Zener diode is the 1st pin of described driving chip, the anode of the 4th described Zener diode is the 3rd pin of described driving chip, the anode of the 4th described Zener diode is connected with the in-phase input end of the first described comparator and the in-phase input end of the second described comparator respectively, the inverting input of the first described comparator accesses the first reference voltage, the output of the first described comparator inputs with the input and described two of the first described not gate respectively and is connected with door input, the output of the first described not gate is connected with the input of the second described not gate, the output of the second described not gate is connected with the input of the 3rd described not gate, the output and described two of the 3rd described not gate inputs and is connected with another input of door, two described inputs are connected with an input of the one or two described input nand gate with the output of door, the inverting input of the second described comparator accesses the second reference voltage, the output of the second described comparator is connected with the input of the 4th described not gate, the output of the 4th described not gate is connected with another input of the one or two described input nand gate and an input of the two or two described input nand gate respectively, the output of the one or two described input nand gate is connected with the input of the 5th described not gate, the output of the 5th described not gate is connected with the input of the 6th described not gate, the output of the 6th described not gate is connected with the input of the 7th described not gate, the output of the 7th described not gate is connected with another input of the two or two described input nand gate, the output of the two or two described input nand gate is connected with the grid of described NMOS tube, the drain electrode of described NMOS tube is the 4th pin of described driving chip, the source electrode of described NMOS tube is the 2nd pin of described driving chip.
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| CN201420415261.5U CN204042508U (en) | 2014-07-25 | 2014-07-25 | A kind of LEDbulb lamp |
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| CN201420415261.5U CN204042508U (en) | 2014-07-25 | 2014-07-25 | A kind of LEDbulb lamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180221A (en) * | 2014-07-25 | 2014-12-03 | 浙江阳光照明电器集团股份有限公司 | LED bulb lamp |
| WO2016106475A1 (en) * | 2014-12-29 | 2016-07-07 | 东莞励国照明有限公司 | Led bulb lamp with soft light source and manufacturing method thereof |
-
2014
- 2014-07-25 CN CN201420415261.5U patent/CN204042508U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180221A (en) * | 2014-07-25 | 2014-12-03 | 浙江阳光照明电器集团股份有限公司 | LED bulb lamp |
| CN104180221B (en) * | 2014-07-25 | 2017-02-15 | 浙江阳光照明电器集团股份有限公司 | LED bulb lamp |
| WO2016106475A1 (en) * | 2014-12-29 | 2016-07-07 | 东莞励国照明有限公司 | Led bulb lamp with soft light source and manufacturing method thereof |
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Effective date of registration: 20151106 Address after: 312300 Zhejiang Province, Shaoxing city Shangyu District of Tongjiang City Street Road No. 208 Patentee after: ZHEJIANG SUNSHINE MEIJIA LIGHTING CO., LTD. Address before: 312300 Fengshan Road, Shangyu, Zhejiang, No. 485, No. Patentee before: Zhejiang Yankon Lighting Electrical Group Co., Ltd. |