CN1892977A - Electromagnetic induction lamp and lamp tube - Google Patents
Electromagnetic induction lamp and lamp tube Download PDFInfo
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- CN1892977A CN1892977A CN 200510027617 CN200510027617A CN1892977A CN 1892977 A CN1892977 A CN 1892977A CN 200510027617 CN200510027617 CN 200510027617 CN 200510027617 A CN200510027617 A CN 200510027617A CN 1892977 A CN1892977 A CN 1892977A
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Abstract
The electromagnetic induction lamp includes following parts and structures: lamp holder installed on lamp base, case connected to the lamp holder, control circuit placed inside the case; luminous tube connected to the control circuit, fluorescent dye layer coated to inner wall of luminous tube, gas and amalgam contained inside cavity of the luminous tube; encircling a section of luminous tube, anchor ear of magnetic ring is sheathed on luminous tube; magnetic loop inside the anchor ear, winding wrapped on magnetic ring, winding connected to the control circuit. Gases inside luminous tube are gas mixture of argon and krypton. Gas pressure is 0.3 torr, and pressure of amalgam is 5 micro torr. There are one or two pieces of magnetic cores inside magnetic ring. Number of winding is larger than or equal to 14. Features are: high luminous quantity, compact structure of outline, and working frequency from 150 to 300KHz.
Description
Technical Field
The present invention relates to electromagnetic induction lamps, and more particularly to an electromagnetic induction lamp with lamp parameters and a lamp thereof.
Background
The electromagnetic induction lamp belongs to a new generation energy-saving product without filaments, high luminous efficiency, high luminous flux, long service life and high power factor, and can be widely applied to families, plants, office places, roads, engineering construction sites and the like.
In a nineteen-to-nine year, the japan panasonic corporation invented Everlight electrodeless lamps, the nineteen-to-four year GE produced the courra lamp, and the nineteen-to-seven year philips developed into QL electrodeless lamps, which are based on the principle that electric energy is converted into magnetic energy by electromagnetic induction and the magnetic energy is converted into light energy to emit light, and thus they all belong to electromagnetic induction lamps, and the shapes and structures thereof are substantially the same, as shown in fig. 1, the lamp 100 includes:
a base 102 connectable to a lamp holder. The housing 104, which is connected to the base 102, has a cavity therein. An electromagnetic induction lamp circuit is disposed within the cavity of the housing 104. A lamp tube 106, which is spherical, is fixed to the envelope 104 and contains krypton and an amalgam 108 for maintaining the discharge. A glass chamber 110, in which the coil is mounted, is fixed to the outer envelope 104, extends into the interior of the lamp vessel 106, and has an exhaust opening 112 at one end. A conductive glass material 114, which is connected to the RF ground, connects the lamp 106 and the RF ground. A phosphor coating 116 covering the inside of the lamp tube 106, the outside of the glass cavity 110, and the portion of the lamp tube 106 that is connected to the conductive glass material 114. A titanium dioxide reflective coating 118 covering the outside of the glass cavity 110 and the portion of the lamp tube106 that is connected to the conductive glass material 114. And a conductive coating 120 covering the outside of the lamp tube 106. The coil placed in the glass cavity 110 of the lamp generates a magnetic field when the lamp works, the magnetic field drives the gas in the lamp tube to carry out ionization discharge to generate light, although the lamp has the advantages of an electrodeless lamp, the miniaturization is realized, and the lamp can directly replace an incandescent lamp, but the lamp has higher cost, complex process and difficult manufacture. And is limited to only low power electrodeless lamps.
When the lamp works, the coil arranged in the glass cavity 110 generates a magnetic field, the magnetic field drives gas in the lamp tube to carry out ionization discharge to generate light, although the lamp has the advantages of an electrodeless lamp, the miniaturization is realized, and the lamp can directly replace an incandescent lamp, but the lamp has higher cost, complex process and difficult manufacture. And is limited to only low power electrodeless lamps.
Disclosure of Invention
The invention aims to provide a novel electromagnetic induction lamp, which improves the parameters of a lamp tube and the structure of the lamp tube.
According to an aspect of the present invention, there is provided an electromagnetic induction lamp tube suitable for an electromagnetic induction lamp, wherein a gas and an amalgam are filled, the gas in the lamp tube is an argon krypton gas mixture, the gas pressure is 0.3 torr, and the gas pressure of the amalgam is 5 μ torr.
According to the embodiment of the invention, the exhaust pipe of the lamp tube is built-in and is placed in the lamp tube, amalgam and indium net are placed in the exhaust pipe, and the amalgam is a single amalgam or a main amalgam plus a plurality of auxiliary amalgams; or the exhaust pipe of the lamp tube is external and is arranged outside the lamp tube, the amalgam and the indium net are arranged in the exhaust valve, and the amalgam is a single amalgam or a main amalgam plus a plurality of auxiliary amalgams.
According to an embodiment of the present invention, the lamp tube further has one or more ports where an indium mesh is placed.
According to an embodiment of the invention, the amalgam is weighted according to the power level as:
15W-40mg、23W-60mg、40W-90mg、80W-135mg、120W-180mg、150W-225mg、200W-270mg。
according to the embodiment of the invention, the lamp tube is in a closed three-dimensional shape.
According to the embodiment of the invention, the lamp tube is annular, and the magnetic ring support and the magnetic ring are sleeved on the lamp tube and surround one section of the lamp tube; or the lamp tubes are in double U shapes, two bridges are arranged between the two U-shaped lamp tubes and connected with each other, and the magnetic ring support and the magnetic ring are sleeved on the bridges to surround one cross section of each bridge.
According to an embodiment of the present invention, the right pillar region of the bottom end of the lamp tube has an enlarged cross-sectional area.
According to the embodiment of the invention, the lamp tube is U-shaped, a bridge is arranged in the opening of the U-shaped, the magnetic ring hoop and the magnetic ring are sleeved on the bridge, and the bottom end of the lamp tube is expanded to be mushroom-shaped; or the lamp tube is n-shaped, and the bottom end of the lamp tube is enlarged to be mushroom-shaped.
According to the embodiment of the invention, the inner wall of the lamp tube is coated with a protective layer of aluminum oxide, and rare earth tricolor fluorescent powder is further coated on the protective layer.
According to another aspect of the present invention, there is provided an electromagnetic induction lamp including a lamp base mountable to a lamp socket; the control circuit shell is connected with the lamp holder, the lamp holder is sleeved on the control circuit shell, and a control circuit is arranged in the control circuit shell; the lamp tube is connected to the control circuit shell, the inner wall of the lamp tube is coated with a fluorescent powder layer, and the cavity of the lamp tube contains gas and amalgam; the magnetic ring hoop is sleeved on the lamp tube and surrounds a certain section of the lamp tube; the magnetic ring is placed in the magnetic ring hoop and also surrounds the section of the lamp tube; the coil is wound on the magnetic ring, is connected with the control circuit and provides a magnetic field to light the electromagnetic induction lamp; wherein, the gas in the lamp tube is argon krypton mixed gas, the gas pressure is 0.3 torr, and the gas pressure of the amalgam is 5 micro torr; the number of the magnetic cores in the magnetic ring is 1-2; the number of the coils is more than or equal to 14.
According to an embodiment of the present invention, according to the magnitude of the power, determining parameters of the electromagnetic induction lamp as follows:
number of magnetic cores: 15W-1, 23W-1, 40W/80W/120W 150W/200W-2;
number of coils: 15W-14 circles, 23W-15 circles, 40W-15 circles, 80W-18 circles, 120W-18 circles, 150W-18 circles and 200W-18 circles.
Weight of iron oxide used in the magnetic ring: 15W-40g, 23W-74g, 40W-135g, 80W-180g, 120W-180g, 150W-180g and 200W-235 g;
discharge current: 15W-2.2A, 23W-3A, 40W-4.2A, 80W-5A, 120W-6A, 150W-6.5A and 200W-9A.
According to the embodiment of the invention, the exhaust pipe of the lamp tube is built-in and is placed in the lamp tube, amalgam and indium net are placed in the exhaust pipe, and the amalgam is a single amalgam or a main amalgam plus a plurality of auxiliary amalgams; or the exhaust pipe of the lamp tube is external and is arranged outside the lamp tube, the amalgam and the indium net are arranged in the exhaust valve, and the amalgam is a single amalgam or a main amalgam plus a plurality of auxiliary amalgams.
According to an embodiment of the present invention, the lamp tube further has one or more ports where an indium mesh is placed.
According to an embodiment of the invention, the amalgam is weighted according to the power level as:
15W-40mg、23W-60mg、40W-90mg、80W-135mg、120W-180mg、150W-225mg、200W-270mg。
according to the embodiment of the invention, the lamp tube is in a closed three-dimensional shape.
According to the embodiment of the invention, the lamp tube is annular, and the magnetic ring support and the magnetic ring are sleeved on the lamp tube and surround one section of the lamp tube; or the lamp tubes are in double U shapes, two bridges are arranged between the two U-shaped lamp tubes and connected with each other, and the magnetic ring support and the magnetic ring are sleeved on the bridges to surround one cross section of each bridge.
According to an embodiment of the present invention, the right pillar region of the bottom end of the lamp tube has an enlarged cross-sectional area.
According to the embodiment of the invention, the lamp tube is U-shaped, a bridge is arranged in the opening of the U-shaped, the magnetic ring hoop andthe magnetic ring are sleeved on the bridge, and the bottom end of the lamp tube is expanded to be mushroom-shaped; or the lamp tube is n-shaped, and the bottom end of the lamp tube is enlarged to be mushroom-shaped.
According to the embodiment of the invention, the inner wall of the lamp tube is coated with a protective layer of aluminum oxide, and rare earth tricolor fluorescent powder is further coated on the protective layer.
According to an embodiment of the invention, the control circuit comprises: the anti-electromagnetic interference filter is connected with the alternating current power supply; the bridge rectifier module is connected with the anti-electromagnetic interference filter; the active power factor corrector is connected with the bridge rectifier module; the closed-loop dimming controller is connected with the active power factor corrector; the half-bridge inversion oscillating circuit module is connected with the closed-loop dimming controller; the central processing unit is connected with the half-bridge inversion oscillation power supply module; the power output device is connected with the half-bridge inversion oscillation power supply module and the central processing unit; the electromagnetic inductor is connected with the power output device and the starting controller; the dimming signal compensator is connected with the closed-loop dimming controller and the central processing unit; the starting controller is connected with an alternating current power supply; and the protection circuit is connected with the power output device and the central processing unit, and detects the output signal and feeds the output signal back to the central processing unit.
According to the embodiment of the present invention, the central processing unit is an HY4501 chip.
By adopting the technical scheme, the electromagnetic induction lamp has the advantages that the parameters and the structure of the lamp tube are improved, so that the lamp tube has higher luminous quantity and a compact appearance structure, and the working frequency of the electromagnetic induction lamp circuit can be 150-300 KHz.
Drawings
The above and other features, properties and advantages of the present invention will become apparent from the following further detailed description of embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters refer to like features throughout, and wherein:
FIG. 1 is a diagram of a conventional electromagnetic induction lamp structure and a lamp tube;
FIGS. 2A and 2B are block diagrams of an electromagnetic induction lamp according to an embodiment of the present invention;
FIGS. 3A and 3B are lamp tube structure diagrams of an electromagnetic induction lamp according to an embodiment of the present invention;
fig. 4A and 4B are structural diagrams of an electromagnetic induction lamp having a discharge-extended area according to an embodiment of the present invention.
FIG. 5 is a block diagram of the control circuitry of one embodiment of the compact electromagnetic induction lamp of the present invention;
fig. 6 is a control circuit diagram of one embodiment of the compact electromagnetic induction lamp of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Fig. 2A and 2B are block diagrams of an embodiment according to the present invention, and fig. 2A and 2B are views in two different directions, respectively. As shown in fig. 2, the electromagnetic induction lamp 200 of this embodiment includes the following structure:
a base 202, the base 202 being mountable to a lamp holder. The lamp base 202 has the same structure as a lamp base of a conventional art, and the lamp socket has the same structure. The control circuit shell 204 is connected to the lamp head 202, the lamp head 202 is sleeved on the control circuit shell 204, and the control circuit 206 is arranged in the control circuit shell 204. A lamp tube 208 having a phosphor layer coated on the inner wall and containing a gas and an amalgam within the chamber. And the magnetic ring hoop 210 is sleeved on the lamp tube 208 and surrounds a certain section of the lamp tube 208. Within the magnetic ring hoop 210 is a magnetic ring 212, the magnetic ring 212 also surrounding the above-mentioned cross section of the lamp tube 208. Referring to the embodiment shown in fig. 2, the shape of the lamp vessel here is "U" shaped, with a bridge in the opening of the "U". The magnetic ring hoop 210 is located at the bridge, surrounding a cross section of the bridge. A coil 214 is wound around the magnetic ring 212, and the coil 214 is connected to the control circuit 206 to provide a magnetic field to ignite the electromagnetic induction lamp 200. According to the technical scheme of the invention, only one magnetic ring hoop 210 is adopted, and as shown in fig. 2, when the U-shaped lamp tube with the bridge connection is adopted, the position of the magnetic ring hoop 210 is positioned in the hollow crotch in the middle of the lamp tube, so that extra space is not required to be occupied, and the whole volume of the lamp tube can be reduced. The present embodiment further comprises a clamping plate 216, such that the lamp tube 208 and the magnetic ring hoop 210 are not directly connected to the control circuit housing 204, but are connected to the clamping plate 216, and the clamping plate 216 is connected to the control circuit housing 204. Fig. 2B is a sectional view of a portion of the lamp tube 208 and the connection between the magnetic ring hoop 210 and the clamp plate 216, which is made by screws in this embodiment.
Fig. 3A and 3B are structural views of a lamp tube of one embodiment of the present invention, again from two directions. As shown in fig. 3, the lamp 300 in this embodiment is shaped as a "U" shaped lamp, and a bridge 302 is disposed in the "U" shaped opening, and the magnetic ring hoop 210 in this embodiment is sleeved on the bridge 302. It should be noted that the present invention is not limited to the shape of the lamp tube, any shape of the lamp tube that can form a closed shape can be used, and the position of the magnetic ring hoop 210 is not fixed, as long as it can surround a certain section of the lamp tube. It is easy to think that when the lamp tube is redesigned, the lamp tube is provided with a relatively thin part, which is beneficial to installing a small magnetic ring hoop, so that the whole volume of the lamp can be reduced. The shape of the tube shown is a preferred choice but is not intended to limit the scope of the invention to the shape disclosed herein. The invention also provides an improvement on the lamp tube, namely, the exhaust tube is arranged inside the lamp tube. As shown in FIG. 3, at one end of the "U" shape, there is a concave portion, namely the exhaust tube 304. compared with the prior art (refer to FIG. 1), the exhaust tube 304 in the lamp of the present invention no longer protrudes out of the lamp, so that the possibility of damaging the exhaust tube of the lamp is greatly reduced. It should be noted that the use of the internal exhaust pipe is advantageous to the safety and life of the lamp, but the use of the external exhaust pipe is also feasible, and since the external exhaust pipe is a technology which is commonly used at present, it is not described in detail here, and although the description is mainly given in conjunction with the internal exhaust pipe after the present application, it can be understood by those skilled in the art that the external exhaust pipe may also adopt the technical solution of the present invention. Proceed back to fig. 3A and 3B. Meanwhile, in the exhaust pipe 304, besides the solid mercury 306, an indium net 308 is added, the indium net 308 can reduce the influence of the outside temperature on the starting and the working of the lamp, and the lamp can reach the rated luminous flux and the full power state instantly after being started. To improve the operation of the lamp, one or more ports for placing indium mesh 308 may be provided in the lamp tube, for example, in this embodiment, the other end 310 of the "U" tube is provided with a port for placing indium mesh 308. The inner wall of the lamp 300 is coated with a phosphor layer 312 and the chamber of the lamp contains a gas and an amalgam 314, the parameters of which are described later, and the amalgam in the invention can be a single amalgam or a main amalgam plus several auxiliary amalgams. Fig. 3B illustrates the structure of the lamp 300 from the side, and the connection with the magnetic ring hoop 210 has been described previously and will not be repeated here.
In another embodiment, the lamp may be a double U-shaped lamp, and the two U-shaped lamps are connected by a bridge, for example, two bridges are provided between the two U-shaped lamps and located on two arms of the two U-shaped lamps respectively. The magnetic ring bracket and the magnetic ring are sleeved on the two bridges to surround one section of the bridge. The lamp tube also adopts a multipoint driving mode, the top ends of the two U-shaped lamp tubes are also provided with a starting port and a plurality of auxiliary starting ports, and the starting port and the auxiliary startingports are provided with built-in exhaust pipes. In this embodiment, a start port and three auxiliary start ports are arranged at four top ends of two U-shaped lamps, an indium net and an amalgam are arranged in an exhaust pipe of the start port, and the amalgam can be a single amalgam or a main amalgam plus a plurality of auxiliary amalgams to assist in arranging the indium net in the exhaust pipe of the start port. Similarly, the lamp tube can also adopt an external exhaust tube.
In yet another embodiment, the lamp tube can be a relatively simple annular lamp tube, and the magnetic ring support and the magnetic ring are sleeved on the annular lamp tube to surround a section of the lamp tube. The lamp tube can adopt a multipoint driving mode or a single-point driving mode, and for the multipoint driving mode, a starting port and a plurality of auxiliary starting ports can be arranged on the annular lamp tube, and the starting port and the auxiliary starting ports are provided with built-in or external exhaust pipes. For single point drive, only one port is typically provided and may have an internal or external exhaust port. Indium net and amalgam are placed in the port, and the amalgam can adopt single amalgam or adopt the mode of adding several auxiliary amalgams into one main amalgam
Various parameters are specifically set for the lamp used in the present invention, for example, according to one embodiment, the gas placed in the lamp is a mixture of argon and krypton, with a gas pressure of 0.3 torr and an amalgam (mercury vapor) with a gas pressure of 5 μ torr. The invention also sets the number of magnetic cores, the number of coils, the weight of iron oxide, the weight of amalgam and the current of discharge according to the lamps with different powers. For example:
the number of cores can be set according to the following criteria: 15W-1, 23W-1, 40W/80W/120W 150W/200W-2. Generally, the number of magneticcores of the electromagnetic induction lamp according to the present invention is 1-2.
The number of coils can be set according to the following criteria: 15W-14 circles, 23W-15 circles, 40W-15 circles, 80W-18 circles, 120W-18 circles, 150W-18 circles and 200W-18 circles. Generally, the number of coils of the electromagnetic induction lamp according to the present invention is 14 or more.
The weight of iron oxide used in the magnet ring can be set according to the following criteria: 15W-40g, 23W-74g, 40W-135g, 80W-180g, 120W-180g, 150W-180g and 200W-235 g.
The weight of the amalgam used can be set according to the following criteria: 15W-40mg, 23W-60mg, 40W-90mg, 80W-135mg, 120W-180mg, 150W-225mg and 200W-270 mg. These amalgams may be placed in one port or in different ports.
Discharge current: 15W-2.2A, 23W-3A, 40W-4.2A, 80W-5A, 120W-6A, 150W-6.5A and 200W-9A.
Meanwhile, the power loss of the ferrite magnetic ring coil of the electromagnetic induction lamp is less than 4% of the total input rate.
On the basis of the above technical solution, another aspect of the present invention, that is, how to improve the light emitting efficiency of the electromagnetic induction lamp, is described with reference to fig. 4.
For an electromagnetic induction lamp, the relationship between the discharge current and the electric field is as follows, and in the positive column region, the relationship between the discharge current and the electric field is:
wherein R is the diameter of the discharge tube, sigmaeFor the electrical conductivity of a positive column plasma, the following can be approximated:
according to the formula, the cross section area of the discharge loop is increased, so that the current and the electric conductivity can be effectively reduced. Therefore, Hg generated by high temperature of gas in the lamp can be effectively reduced2 +Decompositionand recombination phenomena of (1):
therefore, the cross section area of the discharge is properly enlarged to control the optimal temperature of the plasma operation, and the ionization loss of the discharge can be effectively reduced. More importantly, the radial corona problem of mercury in discharge is solved, and because the corona generation is determined by the concentration of electrons, the reduction of the electron concentration can inhibit the corona discharge, so that the working performance of the lamp is more stable, and the energy loss problem of high-energy electrons can be reduced.
Fig. 4A and 4B are structural views of an electromagnetic induction lamp having an enlarged light emitting area according to the present invention. As shown in fig. 4, the electromagnetic induction lamp includes: a base 402, the base 402 being mountable to a lamp holder. The base 402 has the same structure as a conventional base, and the lamp holder has the same structure. The control circuit shell 404 is connected with the lamp holder 402, the lamp holder 402 is sleeved on the control circuit shell 404, and the control circuit 406 is arranged in the control circuit shell 404. The control circuit shell is connected with a lampshade 405, the lampshade 405 is connected to a lamp tube 408, the inner wall of the lamp tube 408 is coated with a fluorescent powder layer 407, and the cavity of the lamp tube contains gas and amalgam, wherein the gas is inert gas 409. And the magnetic ring hoop 410 is sleeved on the lamp tube 408 and surrounds a section of the lamp tube 408, and the magnetic ring hoop is fixed on the lamp shade 405 through a screw 411. Within the magnetic ring hoop 410 is a magnetic ring 412, the magnetic ring 412 also surrounding the above-mentioned cross section of the lamp tube 408. The shape of the lamp tube in thisembodiment is "U" shaped with a bridge in the opening of the "U". The magnetic ring hoop 410 is positioned at the bridge, surrounding a cross section on the bridge. A coil 414 is wound around the magnet ring 412, and the coil 414 is connected to the control circuit 406 to provide a magnetic field to ignite the electromagnetic induction lamp 400. Referring to the partial cross-sectional structure of fig. 4A and 4B, it can be seen that the two top ends of the lamp tube 408 are each provided with an exhaust tube 416 disposed therein, and the exhaust tube 416 has solid mercury 418 and indium mesh 20 disposed therein. It should be noted that the exhaust tube 416 of the lamp tube 408 shown in this embodiment is disposed inside the lamp tube, which is more advantageous for the safety of the lamp tube, and the exhaust tube has the mercury-fixing and indium net disposed therein, and in addition, the lamp tube 408 has one or more other ports having the indium net disposed therein, such as another port in the shape of a "U", which is not shown in fig. 4A and 4B in cross-section, but the structure thereof can be understood by those skilled in the art. The greatest improvement in the embodiment shown in fig. 4A and 4B is the shape of the light tube 408, which is the shape of its bottom end, and the light tube 408 in this embodiment is also "U" shaped, but with its bottom end enlarged to be mushroom-shaped, as is evident from the side view configuration in fig. 4B. The lamp tube 408 with the shape enlarges the sectional area of the positive column area, can better control the optimal working temperature of the plasma, and can effectively reduce the ionization loss of discharge. More importantly, the radial corona problem of mercury in discharge is solved, and because the corona generation is determined by the concentration of electrons, the reduction of the electron concentration can inhibit the corona discharge, so that the working performance of the lamp is more stable, and the energy loss problem of high-energy electrons can be reduced.
In addition to the shape of the lamp tube shown in fig. 4A and 4B, the lamp tube may have a "pi" shape, and the bottom end is also enlarged to have a mushroom shape. Alternatively, the tube may be hemispherical, with the bottom end having a larger diameter. It should be noted that other shapes are considered to be within the scope of the present invention as long as they meet the criteria of enlarging the cross-sectional area of the positive column region.
The lamp in the above-described embodiment differs from the lamp described in connection with fig. 3A and 3B only in the outer shape (especially the bottom) of the lamp, and the arrangement of the ports, the arrangement of the amalgam, the arrangement of the exhaust port, and the parameters of the various lamps are the same as those in the above-described embodiment and will not be repeated here.
According to the present invention, the lamp tube in the above embodiments may be coated with the rare earth tri-phosphor, thereby making an electromagnetic induction lamp capable of emitting colored light.
Next, a control circuit of the electromagnetic induction lamp of the present invention is described, and is shown in fig. 5:
the anti-electromagnetic interference filter 501 can be an EM1 anti-electromagnetic interference filter, an alternating current power supply is connected to the input end of the anti-electromagnetic interference filter 501, and higher harmonic interference can be suppressed through secondary common mode and primary differential mode filtering in the anti-electromagnetic interference filter, so that the serious electromagnetic interference phenomenon between a power grid and the circuit is greatly reduced, and the national standard of conductive interference is reached;
the bridge rectifier module502 is connected with the anti-electromagnetic interference filter 501, and provides a direct current power supply starting power supply for a subsequent circuit, particularly the half-bridge inverter oscillation power supply module 505 after rectification;
the active power factor corrector 503 is connected with the bridge rectifier module 502, and contains a voltage automatic correction circuit in its interior, and also includes an electrolytic capacitor, after the capacitor is charged, it can be used as power supply of subsequent circuit, the active power factor corrector 503 can reduce the top pulse charged by electrolytic capacitor, and reduce the ripple amplitude of direct current voltage, so that the reactive power of line can be greatly reduced, and the active power of line can be raised, and the output power factor of circuit can be up to above 0.99, and the active power factor corrector 503 can output a constant voltage, and has the function of automatic regulation, so that the load can not be changed due to the fluctuation of network voltage. Meanwhile, the electrolytic capacitor provides a secondary filtering function;
a closed-loop dimming controller 504 connected to the active power factor corrector 503, the closed-loop dimming controller 504 providing a dimming operating voltage to the cpu 506;
a half-bridge inverter oscillation circuit module 505, connected to the closed-loop dimming controller 504, for providing working voltage for the subsequent circuit;
the central processing unit 506 is connected with the half-bridge inverter oscillation power supply module 505 and controls the work of the whole circuit;
a power output device 507 connected with the half-bridge inverter oscillation power module 505 and the central processor 506;
a dimming signal compensator 509 coupled to the closed-loop dimming controller 504 and the central processor 506 to provide dimming compensation;
a start controller 510 connected to an ac power supply to perform start control of the electromagnetic induction lamp;
the electromagnetic inductor 508 is connected with the power output device 507 and the starting controller 510, and the output of the electromagnetic inductor 508 is connected with an electromagnetic induction lamp;
and the protection circuit 511 is connected with the power output device 507 and the central processing unit 506, detects an output signal and feeds the output signal back to the central processing unit 506.
An embodiment is described below to further illustrate the closed-loop dimming controller 504, the half-bridge inverter oscillating circuit module 505, the central processing unit 506, the power output unit 507, the dimming signal compensator 504, the start controller 510, the electromagnetic inductor 508 and the protection circuit 511 in the semi-utility model. Fig. 6 is a circuit diagram of several of the components described above in this embodiment.
As shown in fig. 6, in this embodiment, the central processing unit is an HY4501 chip, and HY4501 is an electronic ballast asic integrating dimming, driving, and protection circuits, and the dimming range is 20% to 100%.
In this embodiment, R2 and R3 form a closed-loop dimming controller, the potentiometer R1 is a dimming signal compensator, and R1 is connected to R2 and R3, and its sliding end is connected to pin 3 of the cpu HY4501 to provide a dimming signal.
The half-bridge inverter oscillation circuit module of this embodiment includes two inverter tubes, first inverter tube is MOS pipe Q70, be connected to HY4501 chip's 9 th pin through resistance R31, the second inverter tube is MOS pipe Q80, be connected to HY4501 chip's 11 th pin through resistance R25, can see from figure 3, Q70 and Q80's grid pass through diode D21 and D11 respectively and link to each other with triode Q7 and Q6, triode Q7 and Q6 have constituted this half-bridge inverter oscillation circuit module's auxiliary switch circuit, owing to increased these two triodes, can effectively shorten the on-off time of circuit, when operating frequency is about 300KHz, MOS pipe's high frequency loss has obvious improvement. The resistors R24, R26, R27, R82 and R83, the diodes D13 and D91 and the capacitor C53 in fig. 3 are auxiliary components in the half-bridge inverter oscillation circuit module.
The power output device of this embodiment is an inductor L4, which is connected to the source of the MOS transistor Q70 and the drain of the MOS transistor Q80 to provide power output during operation for subsequent circuits.
The electromagnetic inductor of the embodiment is two half arc type magnetic rings LN1 and LN2, the lamp tube of the electromagnetic induction lamp is clamped in the middle, and the magnetic rings LN1 and LN2 are wound with coils which are respectively odd number of turns (such as 17 turns) and even number of turns (such as 18 turns) to be used as an N pole and an S pole.
The starting controller of the embodiment is a capacitor C41, one end of the capacitor C41 is connected with an alternating current power supply, the other end of the capacitor C41 is connected with an electromagnetic inductor, starting voltage is provided for the electromagnetic inductor when the electromagnetic induction lamp is started, and after the electromagnetic inductor works normally, working voltage is provided for the electromagnetic inductor by a half-bridge inverter oscillation circuit module.
The protection circuit of the embodiment comprises a MOS transistor Q9, a triode Q8, resistors R28, R29, R36, R42 andR81, capacitors C40, C42, C51 and a diode D90, wherein an output signal is sampled from a power output device through the capacitor C42 and fed back to a No. 2 pin of HY4501, and HY4501 stops working if the output signal is over-voltage or enters a capacitive mode, so that the circuit is protected.
The working principle of the circuit is that the control circuit generates high-frequency current to be transmitted to the coil on the magnetic ring, the magnetic ring generates higher magnetic induction intensity to form an alternating magnetic field, the alternating magnetic field couples electric energy into the lamp tube to form voltage to cause gas and amalgam in the cavity to be ionized, ultraviolet rays emitted by ionized mercury atoms strike fluorescent powder, then the lamp tube emits the ultraviolet rays to strike the fluorescent powder, and then the lamp tube emits light. The electromagnetic induction lamp circuit can lead the electromagnetic induction lamp to achieve the following parameters:
the lighting effect is more than 80 Lm/W;
the working frequency is more than 200 KHz;
the power factor is more than 0.99;
the service life is more than 100000 hours;
the starting can be carried out at the temperature of minus 40 ℃;
the harmonic content is less than 8%.
By adopting the technical scheme, the electromagnetic induction lamp has the advantages that the parameters and the structure of the lamp tube are improved, so that the lamp tube has higher luminous quantity and a compact appearance structure, and the working frequency of the electromagnetic induction lamp circuit can be 150-300 KHz.
The embodiments described above are provided to enable persons skilled in the art to make or use the invention and that modifications or variations can be made to the embodiments described above by persons skilled in the art without departing from the inventive concept of the present invention, so that the scope of protection of the present invention is not limited by the embodiments described above but should be accorded the widest scope consistent with the innovative features set forth in the claims.
Claims (21)
1. An electromagnetic induction lamp tube, which is suitable for an electromagnetic induction lamp and is filled with gas and amalgam,
the gas in the lamp tube is argon krypton mixed gas, the gas pressure is 0.3 torr, and the gas pressure of the amalgam is 5 micro torr.
2. The electromagnetic induction lamp tube of claim 1, wherein said tube has an exhaust tube internally disposed within said tube, said exhaust tube having an amalgam and indium mesh disposed therein, said amalgam being a single amalgam or a main amalgam plus a plurality of auxiliary amalgams; or the exhaust pipe of the lamp tube is external and is arranged outside the lamp tube, the amalgam and the indium net are arranged in the exhaust valve, and the amalgam is a single amalgam or a main amalgam plus a plurality of auxiliary amalgams.
3. An electromagnetic induction lamp tube as claimed in claim 2, said tube further having one or more ports for placing indium mesh.
4. A lamp vessel according to claim 2 or 3, wherein the amalgam is weighted according to power level by:
15W-40mg、23W-60mg、40W-90mg、80W-135mg、120W-180mg、150W-225mg、200W-270mg。
5. the electromagnetic induction lamp tube of claim 1, wherein said tube is a closed three-dimensional figure.
6. The electromagnetic induction lamp tube of claim 5, wherein said tube is annular, said magnetic ring support and magnetic ring are sleeved on said tube to surround a cross section of said tube; or the lamp tubes are in double U shapes, two bridges are arranged between the two U-shaped lamp tubes and connected with each other, and the magnetic ring support and the magnetic ring are sleeved on the bridges to surround one cross section of each bridge.
7. The electromagnetic induction lamp tube as claimed in claim 6, wherein the right pillar region of the bottom end of said tube has an enlarged cross-sectional area.
8. The electromagnetic induction lamp tube of claim 7, wherein said tube is "U" shaped, a bridge is provided in the opening of the "U", said magnetic ring hoop and magnetic ring are sleeved on said bridge, the bottom end of said tube is expanded to be mushroom-shaped; or the lamp tube is n-shaped, and the bottom end of the lamp tube is enlarged to be mushroom-shaped.
9. The electromagnetic induction lamp tube of claim 1, wherein the inner wall of said tube is coated with a protective layer of alumina, and the protective layer is further coated with a rare earth tri-phosphor.
10. An electromagnetic induction lamp comprises a lamp holder, wherein the lamp holder can be arranged on a lamp holder; the control circuit shell is connected with the lamp holder, the lamp holder is sleeved on the control circuit shell, and a control circuit is arranged in the control circuit shell; the lamp tube is connected to the control circuit shell, the inner wall of the lamp tube is coated with a fluorescent powder layer, and the cavity of the lamp tube contains gas and amalgam; the magnetic ring hoop is sleeved on the lamp tube and surrounds a certain section of the lamp tube; the magnetic ring is placed in the magnetic ring hoop and also surrounds the section of the lamp tube; the coil is wound on the magnetic ring, is connected with the control circuit and provides a magnetic field to light the electromagnetic induction lamp;
it is characterized in that the preparation method is characterized in that,
the gas in the lamp tube is argon krypton mixed gas, the gas pressure is 0.3 torr, and the gas pressure of the amalgam is 5 micro torr;
the number of the magnetic cores in the magnetic ring is 1-2;
the number of the coils is more than or equal to 14.
11. The electromagnetic induction lamp of claim 10, wherein the parameters of the electromagnetic induction lamp are determined according to the power level as follows:
number of magnetic cores: 15W-1, 23W-1, 40W/80W/120W 150W/200W-2;
number of coils: 15W-14 circles, 23W-15 circles, 40W-15 circles, 80W-18 circles, 120W-18 circles, 150W-18 circles and 200W-18 circles.
Weight of iron oxide used in the magnetic ring: 15W-40g, 23W-74g, 40W-135g, 80W-180g, 120W-180g, 150W-180g and 200W-235 g;
discharge current: 15W-2.2A, 23W-3A, 40W-4.2A, 80W-5A, 120W-6A, 150W-6.5A and 200W-9A.
12. The induction lamp of claim 10, wherein said lamp vessel has an exhaust tubedisposed internally within said lamp vessel, said exhaust tube having an amalgam and indium mesh disposed therein, said amalgam being a single amalgam or a main amalgam plus a plurality of auxiliary amalgams; or the exhaust pipe of the lamp tube is external and is arranged outside the lamp tube, the amalgam and the indium net are arranged in the exhaust valve, and the amalgam is a single amalgam or a main amalgam plus a plurality of auxiliary amalgams.
13. The electromagnetic induction lamp of claim 12 wherein said lamp tube further has one or more ports for placement of an indium mesh.
14. The electromagnetic induction lamp according to claim 12 or 13, wherein the amalgam is weighted by the amount of power:
15W-40mg、23W-60mg、40W-90mg、80W-135mg、120W-180mg、150W-225mg、200W-270mg。
15. the electromagnetic induction lamp of claim 10, wherein said lamp vessel is a closed three-dimensional figure.
16. The electromagnetic induction lamp of claim 15, wherein said lamp tube is annular, said magnetic ring support and magnetic ring being fitted over said lamp tube to surround a cross-section of said lamp tube; or the lamp tubes are in double U shapes, two bridges are arranged between the two U-shaped lamp tubes and connected with each other, and the magnetic ring support and the magnetic ring are sleeved on the bridges to surround one cross section of each bridge.
17. The induction lamp of claim 15, wherein the right leg region of the bottom end of said lamp vessel has an enlarged cross-sectional area.
18. The electromagnetic induction lamp as claimed in claim 17, wherein said lamp tube is "U" shaped, a bridge is provided in the opening of the "U", said magnetic ring hoop and magnetic ring are sleeved on said bridge, the bottom end of said lamp tube is enlarged to form mushroom shape; or the lamp tube is n-shaped, and the bottom end of the lamp tube is enlarged to be mushroom-shaped.
19. The electromagnetic induction lamp of claim 10, wherein the inner wall of said lamp vessel is coated with a protective layer of alumina, and a rare earth tri-phosphor is further coated on said protective layer.
20. The electromagnetic induction lamp of claim 10, wherein said control circuit comprises:
the anti-electromagnetic interference filter is connected with the alternating current power supply;
the bridge rectifier module is connected with the anti-electromagnetic interference filter;
the active power factor corrector is connected with the bridge rectifier module;
the closed-loop dimming controller is connected with the active power factor corrector;
the half-bridge inversion oscillating circuit module is connected with the closed-loop dimming controller;
the central processing unit is connected with the half-bridge inversion oscillation power supply module;
the power output device is connected with the half-bridge inversion oscillation power supply module and the central processing unit;
the electromagnetic inductor is connected with the power output device and the starting controller;
the dimming signal compensator is connected with theclosed-loop dimming controller and the central processing unit;
the starting controller is connected with an alternating current power supply;
and the protection circuit is connected with the power output device and the central processing unit, and detects the output signal and feeds the output signal back to the central processing unit.
21. The electromagnetic induction lamp of claim 20, wherein said central processing unit is an HY4501 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100276173A CN100501909C (en) | 2005-07-08 | 2005-07-08 | Electromagnetic induction lamp and lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100276173A CN100501909C (en) | 2005-07-08 | 2005-07-08 | Electromagnetic induction lamp and lamp tube |
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| Publication Number | Publication Date |
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| CN1892977A true CN1892977A (en) | 2007-01-10 |
| CN100501909C CN100501909C (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100276173A Expired - Fee Related CN100501909C (en) | 2005-07-08 | 2005-07-08 | Electromagnetic induction lamp and lamp tube |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958222B (en) * | 2009-07-13 | 2012-05-23 | 上海宏源照明电器有限公司 | Electrode-less lamp and lighting tube thereof |
| CN101956902B (en) * | 2009-07-13 | 2012-12-05 | 上海宏源照明电器有限公司 | Low-power electrode-less lamp and lamp tube thereof |
| TWI493593B (en) * | 2014-11-25 | 2015-07-21 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL185639C (en) * | 1980-10-29 | 1990-06-01 | Philips Nv | LOW-PRESSURE MERCURY DISCHARGE LAMP. |
| CN2857217Y (en) * | 2005-07-08 | 2007-01-10 | 上海宏源照明电器有限公司 | Electromagnetic induction lamp and its tube |
-
2005
- 2005-07-08 CN CNB2005100276173A patent/CN100501909C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958222B (en) * | 2009-07-13 | 2012-05-23 | 上海宏源照明电器有限公司 | Electrode-less lamp and lighting tube thereof |
| CN101956902B (en) * | 2009-07-13 | 2012-12-05 | 上海宏源照明电器有限公司 | Low-power electrode-less lamp and lamp tube thereof |
| TWI493593B (en) * | 2014-11-25 | 2015-07-21 | ||
| CN105042355A (en) * | 2014-11-25 | 2015-11-11 | 上一国际光电股份有限公司 | Induction type fluorescent lamp system structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100501909C (en) | 2009-06-17 |
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