CN2182509Y

CN2182509Y - AC and battery dual-purpose fluorescent lamp

Info

Publication number: CN2182509Y
Application number: CN 94200319
Authority: CN
Inventors: 李上灿
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-01-01
Filing date: 1994-01-01
Publication date: 1994-11-09
Anticipated expiration: 2004-01-01

Abstract

The regulated power supply comprises a power transformer, a rectifier, a voltage adjusting tube Q2, a current amplifying tube Q1 and the like, the output voltage is slightly lower than the voltage stabilizing value of a diode D5, a parallel self-excited single-tube intermittent oscillator with a collector of an oscillating tube Q3 connected with the anode of a power supply is adopted as the fluorescent lamp converter YH2, a 4W fluorescent lamp YD is started and ignited by generating direct current pulse electricity in the Q3 dead period N3, the position of the lamp is adjusted by a metal soft stem, power is supplied to a battery by the regulated power supply when power is supplied by a power grid, the battery is charged by a No. 1 common or battery pack high-energy DC when power is cut off, the two states are automatically switched, and an electromagnetic shielding network B2, a high-frequency filter network and the like are used for reducing and avoiding external interference.

Description

AC and battery dual-purpose fluorescent lamp

The invention relates to an electric light source lighting technology.

Background

In view of power failure of power grid, AC/DC dual-purpose electric light source lighting lamp is required, and the electric-to-optical conversion rate of fluorescent lamp is several times that of incandescent lamp, so that it is preferable. The invention relates to an AC/DC dual-purpose fluorescent lamp and a series of products thereof, and applies two patents, namely a multifunctional AC/DC dual-purpose fluorescent lamp and a fluorescent lamp converter with low-voltage power supply (application number 93206853.7, hereinafter referred to as a former invention I) and a fluorescent lamp converter and a product thereof, in particular to an AC/DC and solar three-purpose fluorescent lamp (application number 93216063.8, hereinafter referred to as a former invention II), and provides a design idea that a fluorescent lamp tube adopts DC pulse power supply to save electricity and two fluorescent lamp converter circuits, and a voltage-stabilized power supply circuit with an output current sampling amplification stage is designed to adapt to the characteristics of a storage battery; in cities, power grid blackouts are usually abnormal blackouts, a direct current power supply has many advantages if batteries are not used, but special requirements are also provided at the moment, namely the characteristic that the direct current pulse electricity of a fluorescent lamp tube can be utilized to the maximum extent to save electricity is utilized to save the consumption of the batteries, the design of a shell is greatly different from the design of the batteries, and the like.

The purpose of the invention is as follows: the fluorescent lamp with both AC and battery functions has high technological performance, high practicability and high economic efficiency.

Technical scheme

FIG. 1 is a circuit diagram of an AC/battery dual-purpose fluorescent lamp, including a regulated power supply, a battery set DC, a fluorescent desk lamp, etc., wherein the regulated power supply includes a power plug, a power line, a power transformer B1, a fuse RD1, rectifiers D1-D4, a filter electrolytic capacitor C1, a linear working series-connected regulated power supply circuit connected in series in sequence, the negative pole of the output end of the rectifier is grounded, D7 and R2 are used for AC indication, D8 blocks the current flowing from the DC to the regulated power supply, RD2 is used for overcurrent protection, the fluorescent desk lamp includes a lamp switch K, a fluorescent lamp converter YH2 (shown by a dotted line square) and a fluorescent desk lamp component, namely a fluorescent lamp tube YD and a tube seat thereof, a lamp cover, a metal soft stem, YH2 adopts a high-frequency transformer feedback, a parallel auto-excited type intermittent single-tube oscillator with base RC timing, an oscillation transformer B3 adopts a ferrite core and is a continuously wound autotransformer with two taps, three windings are formed, an emitter winding N1, a base feedback winding N2 and a boosting winding N of an oscillating tube Q3 adopting an NPN type triode are formed according to the winding sequence, the three windings form a fluorescent tube winding N3, two end electrodes of YD are respectively connected with a boosting end N3 and a power supply positive electrode, N1 is connected between the emitter of Q3 and a power supply negative electrode (Q3 is still a common emitter), a collector of Q3 is connected with the power supply positive electrode, a resistance R3 is indirectly started between the base and the power supply positive electrode, a D9 is reversely connected between the base and the emitter in parallel, and a branch circuit formed by connecting a timing resistor R4 and a timing capacitor C5 in series is formed between the base and the N2, the C4 is used for high-low frequency filtering, the N1 and the N2 form positive feedback to enable the Q3 to generate intermittent oscillation, in the Q3 cut-off period, the B3 converts the energy stored in the Q3 conduction period to a load, namely, the N3 induces a direct current pulse voltage (the polarity is lower positive and upper negative) and feeds the direct current pulse voltage added with the power supply voltage into YD after being added, after starting and igniting, YH2 is a relatively independent component, which is assembled by a printed circuit board (hereinafter referred to as a printing plate), and adopts a detachable sealed iron case, that is, an iron sheet is turned into a square frame, the printing plate is soldered on the inner surface of the frame, the front and back surfaces of the printing plate face the opening surface of the frame for decoration, the iron sheet is used as two covers, the two opening surfaces of the frame are covered and boxed during assembly, one of the covers the opening surface of the visible part of the frame and the superposed surface is connected by a screw for reinforcement, the cover has an extension part and leaves a round hole with an external diameter slightly larger than that of the root part of the metal soft stalk, so that the metal soft stalk can penetrate through the root part of the metal soft stalk to be clamped and fixed, and the iron case also serves as a radiator of Q3.

The above is the same as the previous inventions I and II, except that: because a battery with relatively large internal resistance (compared with a storage battery) is used, a series-type voltage-stabilized power supply circuit which works linearly is simple, a voltage adjusting tube Q2 is connected between the output end of a rectifier and a load, namely a DC and a fluorescent desk lamp in series, a current amplifying tube Q1 is connected with the voltage adjusting tube Q2 in series, a base electrode of the Q1 obtains reference voltage (D6 is used for temperature compensation) through R1, D5 and D6, and the output voltage is equal to the reference voltage minus the voltage drop of an emitter junction of the Q1 and the Q2; the DC adopts a No. 1 common zinc-manganese battery or a high-energy (large-capacity) battery with the same size; a bridge type high-frequency filter network consisting of a mutual inductance type high-frequency choke coil B2 and capacitors C2 and C3 is inserted between the battery pack DC and the fluorescent lamp converter YH 2; the YD adopts a 4W fluorescent lamp tube, because the power consumption of a battery and the lamp power cannot be designed to be too large, the temperature of the tube body is higher (especially at low temperature) than that of the 6W fluorescent lamp tube at the same effective lamp power, the electro-optic conversion rate is higher, the lamp brightness is higher, and the lampshade can be arranged at the upper end of the metal soft stem according to the extending direction of the metal soft stem and can be designed according to the length and the weight of the 4W fluorescent lamp tube; in the YH2 component or YH2 type fluorescent lamp converter, Q3 is installed on the inner side surface (when Q3 is a plastic package tube) or the outer side surface (when Q3 is an iron shell tube) of the frame, and the two are insulated, on the printed board, copper foils insulated with other copper foils are left on the periphery of the copper surface, and a joint part of the copper foils and the inner surface of the frame is soldered to fix the printed board, the positive and negative electrodes of the power supply and all parts are insulated with the frame, the parts of two joints output to the fluorescent lamp tube YD are protruded out of the frame for wiring, a round hole for installing a lamp switch (K) is also left on a cover with an extending part of the frame, the printed board is led in after the power supply lead-in wire is strung with K, the power supply lead-in wire adopts a double-core metal isolation wire, two core wires of the double-core metal isolation wire are used as power supply wires, and the metal isolation layer is connected with the frame, and the tail end is connected with the positive and the DC electrode on the printed board assembled with other parts except the YH2 component. The design has better interference performance due to the electromagnetic shielding and the high-frequency filter network.

FIG. 2 is a schematic diagram of the layout of the plastic housing and the main components of the machine, the plastic housing includes a main body and a left and a right cover plates, the main body includes a front, a top, a back, a bottom and a left and a right side openings, the orientation of which is for the user, the main body is a tetrahedron, the inner space of the tetrahedron is divided into a left chamber and a right chamber by an inner partition plate, and each cover plate is provided with one cover plate, wherein the right chamber contains a battery, the geometric dimension of the battery is designed according to the dimension of No. 1 common zinc-manganese battery, the upper and lower ends are provided with battery spring clips, the left chamber contains electronic components, a power transformer B1 is arranged on the inner surface of the bottom close to the front to balance the weight of the fluorescent desk lamp and enhance the stability of the machine body, a metal soft stem and a fluorescent desk lamp assembly are arranged on the back position of the outer surface of the main body, a lamp switch K is arranged on the front position, a light emitting diode D7 is exposed on the top of the outer surface of the front of the main body, and a power line is led out from the lower back part of the left cover plate; the main body is formed by injection molding and one-step molding, and is characterized in that a front surface, a top surface, a back surface, a bottom surface and an inner partition plate are formed, and the front surface is provided with a handle 1 in the front-back direction of the outer surface of the top surface, the position of the handle is slightly deviated to the right, a round hole for installing a metal soft stem and a lamp switch K, a round hole for exposing a light-emitting diode D7 in the front surface, a printing plate fixing table in a left chamber, a fixing table of a left cover plate, a concave-convex part buckled with the periphery of the left cover plate, notches for installing battery spring clips at the upper end and the lower end in the right chamber, two fixing tables for fastening the right cover plate at the upper end and a concave-convex part buckled with the right cover plate, two round holes for penetrating through a battery wire of the partition plate, a strip-shaped stand leg 2 in the left-right direction and the front-back direction of the outer surface of the bottom surface, and a protruding rectangular strip 3 in the front-back direction at the rightmost right side. Corresponding to the latter, the lower part of the right cover plate is provided with a groove 4 formed in the injection molding process, the groove 4 is buckled with the rectangular strip 3 on the outer surface of the bottom surface of the main body to prevent the lower part of the right cover plate from expanding outwards, and the upper edge of the right cover plate forms a notch corresponding to the fixing table at the upper end in the right chamber of the main body for a fastening screw to pass through in the injection molding process. The upper and lower edges of the left cover plate are provided with strip-shaped notches which move left and right for ventilation, the middle part is provided with a round hole which corresponds to a fixed table in the left chamber of the main body and is used for a fastening screw to pass through, and the rear part of the bottom edge of the left cover plate is provided with a notch for leading out a power line.

The invention has the advantages that: the invention adopts the battery, compared with the storage battery, the invention has the advantages of easy purchase of the battery, low cost, less pollution, less maintenance, smaller power transformer, simpler stabilized voltage supply circuit, smaller volume and weight of the product, lower cost and price and the like; although the design of the casing emphasizes the requirement of the desk lamp, the portable desk lamp is also suitable for mobile use due to the handle.

The best mode for realizing the invention is as follows: the capacity of the common zinc-manganese battery is relatively small, the high-energy battery with the capacity three times that of the common battery is sold on the market, recently, the high-energy battery with the capacity five or six times that of the common battery is developed and put into production successively by Tianjin and the like, and the latter is best matched with the invention; the invention adopts the 'cold start' that the filament of the fluorescent lamp tube is not electrified to heat, i.e. does not utilize thermionic emission, if a panel electrode type fluorescent lamp tube is matched (see the 'DC fluorescent lamp electronic controller' of the patent application of the inventor in detail, application number 89103937.6), the updating cost of the lamp tube can be saved, the trouble of replacing the lamp tube is reduced, and the invention is also an optimal matching; the two are adopted simultaneously, so that the invention becomes a novel fluorescent lamp with excellent technical performance and economic performance.

Claims

1. The dual-purpose fluorescent lamp of alternating current and battery comprises a stabilized voltage power supply, a battery pack (DC), a fluorescent desk lamp, a plastic shell and the like, wherein the stabilized voltage power supply comprises a power plug, a power wire, a power transformer (B1), a fuse (RD 1), rectifiers (D1-D4), a filter electrolytic capacitor (C1) and a stabilized voltage power supply circuit which works linearly which are connected in series in sequence, the negative electrodes of the output ends of the rectifiers (D1-D4) are grounded, the output end of the stabilized voltage power supply is connected with a series branch of a light emitting diode (D7) and a resistor (R2) in addition to a series branch of the light emitting diode (D8) in series and then is connected with the battery pack (DC), and the connection method of the diode (D8) is used for blocking the current flowing to the stabilized voltage power supply from the battery pack (DC), the fluorescent lamp is characterized in that the battery pack (DC) is connected with the fluorescent lamp after being connected with a fuse protector (RD 2) in series, the fluorescent lamp is covered with a lamp switch (K), a fluorescent lamp converter (YH 2) and a fluorescent lamp component, namely a fluorescent lamp tube (YD) and a tube seat, a lampshade and a metal soft stem thereof, the fluorescent lamp converter (YH 2) adopts a high-frequency transformer feedback and base RC timing parallel self-excited single-tube intermittent oscillator, an oscillating transformer (B3) adopts a ferrite magnetic core and is a continuously wound autotransformer with two taps to form three windings, and an emitter winding (N1) and a base feedback winding (N2) of the oscillating tube (Q3) -an NPN type triode-are arranged according to the winding sequence, the invention is characterized in that the invention comprises a boosting winding (N) and a fluorescent tube winding (N3) consisting of the boosting winding (N) and the boosting winding (N3), two end electrodes of the fluorescent tube (YD) are respectively connected with the boosting end of the fluorescent tube winding (N3) and the positive electrode of a power supply, an emitter winding (N1) is connected between the emitter of the oscillating tube (Q3) and the negative electrode of the power supply, the collector of the oscillating tube (Q3) is connected with the positive electrode of the power supply, a base electrode and the positive electrode of the power supply are indirectly connected with a starting resistor (R3), a diode (D9) is connected between the base electrode and the emitter in an anti-parallel mode, a branch circuit is formed by connecting a timing resistor (R4), a timing capacitor (C5) and a base electrode feedback winding (N2) in series, and an electrolytic capacitor (C4) is connected between the positive electrode and the negative electrode of the power supply in parallel

The series voltage-stabilized power supply circuit working linearly in the voltage-stabilized power supply comprises a voltage adjusting tube (Q2) connected in series between the output ends of the rectifiers (D1-D4) and the battery pack (DC) and a current amplifying tube (Q1) connected with the voltage adjusting tube in cascade, wherein the base electrode of the current amplifying tube (Q1), a resistor (R1) connected with the output ends of the rectifiers (D1-D4) indirectly, and a series branch circuit of a voltage-stabilized diode (D5) in a reverse breakdown state and a diode (D6) in a forward conduction state connected with the ground indirectly;

the battery pack (DC) adopts a No. 1 common zinc-manganese battery or a high-energy battery or a large-capacity battery with the same size;

a bridge type high-frequency filter network consisting of a mutual inductance type high-frequency choke coil (B2) and two capacitors (C2 and C3) is also inserted between the fuse (RD 2) and the fluorescent desk lamp;

the fluorescent lamp tube (YD) adopts a 4W fluorescent lamp tube, a lampshade of the fluorescent lamp tube is arranged at the upper end of the metal soft stem according to the extending direction of the metal soft stem, and the lampshade is designed according to the extending direction;

the plastic shell comprises a main body and a left cover plate and a right cover plate, wherein the main body comprises a front surface, a top surface, a rear surface and a bottom surface, the left surface and the right surface are open, the orientation of the main body is in a tetrahedron for a user, the inner space of the tetrahedron is divided into a left chamber and a right chamber by an inner partition plate, the left chamber and the right chamber are respectively provided with one cover plate, the right chamber is used for accommodating a battery, the geometric dimension of the right chamber is designed according to the dimension of a No. 1 common zinc-manganese battery, the upper end and the lower end of the right chamber are provided with battery spring clips, the left chamber is used for accommodating electronic parts, a power transformer (B1) is arranged on the inner surface of the bottom surface in a front mode, the metal soft stem and the fluorescent desk lamp component are arranged on the outer surface of the top surface of the main body in a rear mode, the lamp switch (K) is arranged on the front mode, and the light emitting diode (D7) is exposed to the uppermost part of the outer surface of the front surface of the main body, the power line is led out from the lower rear part of the left cover plate, the main body is simultaneously provided with a front surface, a top surface, a rear surface, a bottom surface and an inner baffle plate when in injection molding, a handle (1) on the front and back of the outer surface of the top surface is slightly inclined to the right, round holes for installing the metal soft stems and a lamp switch (K), round holes for exposing the light-emitting diodes (D7) on the front surface, a fixed platform of a printed circuit board of an assembly part in the left chamber, a fixed platform of the left cover plate, a concave-convex part buckled with the periphery of the left cover plate, notches for installing battery spring clips at the upper end and the lower end of the right chamber, two fixed platforms for fastening the right cover plate at the upper end, a concave-convex part buckled with the periphery of the right cover plate, and two round holes for passing through the battery line, the protruding rectangle strip (3) of trend around the bar stand foot (2), the rightmost strip that moves towards about each about of bottom surface, right side apron should form the lower part respectively when injection moulding with recess (4), upper two and the corresponding notch of fixed station of main part right side room upper end of protruding rectangle strip (3) looks lock of main part bottom surface, the upper and lower limit of left side apron have about the bar breach of trend, the middle part have one with the corresponding garden hole of fixed station of main part left side room, the base rear portion has a confession the notch that the power cord was drawn forth.

2. The YH2 fluorescent lamp inverter (YH 2) module designed for the ac and battery dual-purpose fluorescent lamp as claimed in claim 1, wherein said YH2 fluorescent lamp inverter is assembled by a printed circuit board, and is assembled by a detachable sealed iron case, that is, the iron sheet is bent into a frame in a square shape, the printed circuit board is soldered to the inner surface of the frame, the front and back surfaces of the printed circuit board face the opening surface of the frame, and the iron sheet is made into two cover pieces, and both opening surfaces of the frame are covered during assembly, wherein one cover covers the opening surface of the visible part of the frame and the overlapped surface thereof is connected by a screw, the cover has an extension part and leaves a round hole slightly larger than the outer diameter of the root part of said metal soft stem, and said iron case also serves as a heat sink of said oscillating tube (Q3), the present invention is characterized in that: the oscillating tube (Q3) is arranged on the side surface of the frame and is insulated from the frame; the printed circuit board is provided with copper foils insulated with other copper foils on the periphery of a copper surface and is welded with a joint part of the inner surface of the frame by tin, the positive electrode and the negative electrode of a power supply and all parts are insulated with the frame, the parts of the two joints output to the fluorescent lamp tube (YD) protrude out of the frame, a round hole is also arranged on a cover with an extending part of the frame, the lamp switch (K) is arranged on the round hole, a power supply lead-in wire is connected with the lamp switch (K) in series and then led into the printed circuit board, the power supply lead-in wire adopts a double-core metal isolation wire, two core wires of the double-core metal isolation wire are used as positive and negative power wires, and the metal isolation layer is connected with the frame.

3. The product designed according to claim 1, wherein the fluorescent lamp inverter is the YH2 fluorescent lamp inverter of claim 2, the remaining parts are assembled by a printed circuit board, and the tail end of the metal isolation layer of the power lead-in wire of the YH2 fluorescent lamp inverter, i.e. the two-core metal isolation wire, is connected to the positive electrode of the battery pack (DC).