CN205596428U - Decorative chain and decorative chain group - Google Patents
Decorative chain and decorative chain group Download PDFInfo
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- CN205596428U CN205596428U CN201620376305.7U CN201620376305U CN205596428U CN 205596428 U CN205596428 U CN 205596428U CN 201620376305 U CN201620376305 U CN 201620376305U CN 205596428 U CN205596428 U CN 205596428U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model relates to a decorative chain and decorative chain group, this decorative chain be including at least a string lamp current circuit who is become by a plurality of banks, still be connected with between lamp current circuit and the power input end decorative chain's line current equal or when being greater than a default electrical property keep apart the protection control circuit of lamp current circuit and power input end. Control circuit includes that two at least related input feet and one can be based on two related connection status of inputing between the foot are confirmed control circuit's control signal postpones the delay circuit of output time. The utility model discloses a decorative chain has overcurrent protection function and flashing function, and the decorative chain of this outer joint on a master switch realizes the time delay of scintillation mode switch through setting up the interconnected state between its related input foot to many strings of decorative chain can realize the function of having a ride on a horse, make decorative effect diversified.
Description
Technical field
This utility model relates to decoration decorative chain, particularly to a kind of decorative chain group with overcurrent protection function and the decorative chain of sparkling and composition thereof.
Background technology
Lamp string is widely used in indoor and outdoor decoration, is the indispensable ornament celebrated red-letter day.Lamp string refers mainly to the multiple lamps being connected in an electric loop, and each lamp is respectively provided with lamp bead, the lamp socket of fixing lamp bead and realizes the connection seat that lamp bead electrically connects with wire.Lamp bead can be tengsten lamp or LED.It is fixed with the conducting line segment of metallic conduction terminal by two ends between multiple lamps to be connected in series with each other.The conducting terminal of these conducting line segments inserts the lamp base electric connection in connection seat with lamp bead from connection seat bottom portion, powers for lamp bead.
In order to prevent the lamp socket of fixing lamp bead to lose efficacy from connecting the back light string open circuit that comes off seat, one " clever lamp " is occurred in that on market, it is provided with the inserted sheet that insulant is made on lamp socket, it is provided with when inserted sheet inserts, in connecting seat, the elastic construction making metallic conduction terminal electrically isolate, making metallic conduction terminal be electrically connected with after lamp socket is extracted, is prevented effectively from lamp bead disengaging and causes line short.When lamp bead is tengsten lamp, during in order to prevent lamp bead from damaging because of overcurrent, the open circuit of lamp string was lost efficacy, the lamp bead of " clever lamp " uses the lamp bead of self carried fuse, when meeting with overcurrent electric fuse can by the lamp base short circuit of lamp bead, be prevented effectively from lamp bead damage but still when connecting in seat line broken circuit.When the lamp bead of " clever lamp " is LED, some LED is damaged because of overcurrent, but circuit will not open circuit, but the one of this damage section is basic in short-circuit condition, thus remaining normal lamp bead is appointed and so can be lighted.But, whenever damaging or the lamp bead that comes off, the all-in resistance of circuit i.e. can reduce, line current increases, when the quantity of the lamp bead damaged or come off reaches some, and the power of residue lamp bead will exceed rated power, easily occur that collective damages the dangerous situation of even breaking out of fire.Appearance in order to avoid this situation, a resistance in parallel or diode or a combination of both in each lamp bead of existing " clever lamp ", thus the lamp bead without electric fuse can be used, when lamp bead comes off or damages, connected in circuit by resistance or diode or a combination of both, prevent the generation of the overvoltage phenomenon of other normal lamp bead.But, in each lamp bead, a resistance in parallel or diode or other components and parts cause the caloric value of lamp string, energy loss and cost significantly to raise.Therefore, it is necessary to provide the lamp string of a kind of improvement.
The Chinese utility model patent of applicant (Patent No. 201420680609.3, filing date on November 14th, 2014) protects a kind of lamp string with overcurrent protection function, and when voltage is normal, bright, the power-off of can only realizing powering on is gone out, and does not have the function of flicker.Chinese utility model patent (the Patent No. 201520792883.4 of applicant; filing date on October 15th, 2015) protect a kind of decorative chain with overcurrent protection function and flashing function, but cannot assist between the lamp string on a Christmas tree to produce horse race bright light function.
Summary of the invention
The purpose of this utility model is to provide a kind of existing overcurrent protection function, can realize again flashing function, the decorative chain that also can cooperate with other lamp strings.
A kind of decorative chain, including the most a string lamp series circuit being made up of multiple lamps, the design of the structure of described lamp makes when the lamp bead of lamp comes off from decorative chain or lamp bead is burnt, decorative chain not open circuit, and distribution raises to the voltage on the lamp of the normal work of residue.It is also associated with electrically isolating when the line current of described decorative chain is equal to or more than a preset value protection control circuit of described lamp series circuit and power input between described lamp series circuit and power input.Described protection control circuit includes: for the alternating current from described power input is converted to galvanic rectification circuit；On-off circuit, its input is connected with the cathode output end of described rectification circuit, and it includes the first switch element and second switch unit, and has two outfans that two ends with described lamp series circuit respectively are connected；For described line current being sampled and exporting the sample circuit of a sampled voltage；And for controlling the first switch element of described on-off circuit when described sampled voltage is equal to or more than a predeterminated voltage and second switch unit remains open and can control the first switch element and the conducting of second switch units alternately when sampled voltage is less than predeterminated voltage so that described at least one cluster of lamps, ornamental series circuit control circuit lighting and extinguish.Described control circuit includes at least two association input pin and a delay circuit that can postpone output time according to the control signal of control circuit described in the confirming electrical connection status between said two association input pin.
As a kind of embodiment, described control circuit includes: an exception handling circuit；One reference voltage source that a reference voltage can be provided；One comparison amplifier, one input is as the sampling end of described control circuit, and its another input accesses described reference voltage, and its outfan connects described exception handling circuit；One electric power management circuit being connected with the power input of control circuit；One the 5th switching tube, its first end ground connection, its second end, as an outfan of described control circuit, is connected with described electric power management circuit simultaneously, and it is controlled end and is connected with exception handling circuit by the first trigger；One the 6th switching tube, its first end ground connection, its second end, as another outfan of described control circuit, is connected with described electric power management circuit simultaneously, and it is controlled end and is connected with exception handling circuit by the second trigger；And one be connected, for alternately to the 5th switching tube and the flash controller of the 6th switching tube output conductivity control signal with the end that controls of described 5th switching tube and the 6th switching tube respectively.Described flash controller also serves as described delay circuit, described power input is as the first association input pin, described control circuit also includes that the second association input pin and the 3rd association input pin, described first association input pin, the second association input pin and the 3rd association input pin are all electrically connected with described flash controller.
As a kind of embodiment, described 5th and the 6th switching tube is NPN type triode, and its first end is emitter stage, and its second end is colelctor electrode, and it controls end is base stage.
Preferably, described decorative chain also includes the zero cross detection circuit being connected between the flash controller of described control circuit and described rectification circuit, described zero cross detection circuit includes the stabilivolt of a cathode output end being connected to rectification circuit by resistance element, the plus earth of stabilivolt, the negative pole of stabilivolt passes through two resistance element ground connection being connected in series, and the junction point of the resistance element that said two is connected in series connects the flash controller of described control circuit.Connect described flash controller and associate input pin with the pin of the control circuit of zero cross detection circuit as second.
Described decorative chain also includes the power supply circuits powered for the power input of described control circuit, described power supply circuits include that the diode that anode is connected with the negative pole of described stabilivolt, negative electrode is connected with described power input, described power supply circuits also include being connected to electric capacity between described power input and ground, that be connected in parallel and electrochemical capacitor.
This utility model additionally provides a kind of decorative chain, the lamp series circuit being made up of multiple lamps including two strings, the design of the structure of described lamp makes when the lamp bead of lamp comes off from decorative chain or lamp bead is burnt, decorative chain not open circuit, and distribution raises to the voltage on the lamp of the normal work of residue.It is also associated with electrically isolating when the line current of described decorative chain is equal to or more than a preset value protection control circuit of described lamp series circuit and power input between described two cluster of lamps, ornamental series circuits and power input.Described protection control circuit includes: on-off circuit, and it has two outfans, the described two a string forwards of cluster of lamps, ornamental series circuit, a string oppositely connects between the two outputs；For described line current being sampled and exporting the sample circuit of a sampled voltage；And remain open for controlling described on-off circuit when described sampled voltage is equal to or more than a predeterminated voltage and can control, when sampled voltage is less than predeterminated voltage, the control circuit that described on-off circuit is alternately lighted and extinguished described two cluster of lamps, ornamental series circuits；It is characterized in that, described control circuit includes at least two association input pin and a delay circuit that can postpone output time according to the control signal of control circuit described in the confirming electrical connection status between said two association input pin.
As a kind of embodiment, described control circuit includes: an exception handling circuit；One reference voltage source that a reference voltage can be provided；One comparison amplifier, one input is as the sampling end of described control circuit, and its another input accesses described reference voltage, and its outfan connects described exception handling circuit；One electric power management circuit being connected with the power input of control circuit；One the 5th switching tube, its first end ground connection, its second end, as an outfan of described control circuit, is connected with described electric power management circuit simultaneously, and it is controlled end and is connected with exception handling circuit by the first trigger；One the 6th switching tube, its first end ground connection, its second end, as another outfan of described control circuit, is connected with described electric power management circuit simultaneously, and it is controlled end and is connected with exception handling circuit by the second trigger；One is connected with the control end of described 5th switching tube and the 6th switching tube, respectively for alternately exporting the flash controller of conductivity control signal to the 5th switching tube and the 6th switching tube；And it is connected to the zero cross detection circuit between the flash controller of described control circuit and described power input, described zero cross detection circuit includes that one connects the stabilivolt of power input by resistance element, the plus earth of stabilivolt, the negative pole of stabilivolt passes through two resistance element ground connection being connected in series, and the junction point of the resistance element that said two is connected in series connects the flash controller of described control circuit.Described flash controller also serves as described delay circuit, described power input is as the first association input pin, described control circuit also includes the 3rd association input pin, connects described flash controller and associates input pin with the pin of the control circuit of zero cross detection circuit as the 3rd.Described first association input pin, the second association input pin and the 3rd association input pin are all electrically connected with described flash controller.
This utility model additionally provides a kind of decorative chain group, including the plug of accessible civil power, the main switch being connected plug by power line and detachably connectable the first decorative chain in main switch and the second decorative chain.Described first and second decorative chains use above-mentioned decorative chain, and the first association input pin of described first decorative chain is as the power input of its control circuit, and the second association input pin is unsettled.First association input pin of described second decorative chain connects the first association input pin as the power input of its control circuit, the second association input pin.
As a kind of embodiment, the most detachably connectable in described main switch have the 3rd decorative chain, described 3rd decorative chain uses decorative chain as claimed in claim 1, and also include the 3rd association input pin as zero passage detection terminal, first association input pin of described 3rd decorative chain connects the 3rd association input pin as the power input of its control circuit, the second association input pin.
Decorative chain of the present utility model has overcurrent protection function and flashing function; in addition the decorative chain being connected in a main switch is by arranging the interconnection state between its association input pin; realize flash pattern handoff delay; thus how string decorative chain can realize horse race function so that decorative effect variation.
Accompanying drawing explanation
Fig. 1 is the external structure of decorative chain group in this utility model one embodiment.
Fig. 2 is the partial enlarged drawing in A portion in Fig. 1.
Fig. 3 is the part circuit structure schematic diagram of decorative chain in this utility model one embodiment.
Fig. 4 is the internal circuit schematic diagram of control chip in Fig. 3.
Fig. 5 is zero cross detection circuit and the circuit theory diagrams of power supply circuits in this utility model one embodiment.
Fig. 6 is the connection circuit diagram of two cluster of lamps, ornamental series circuits in another embodiment of this utility model.
Detailed description of the invention
Below in conjunction with specific embodiment and accompanying drawing, this utility model decorative chain is described in further detail.
Fig. 1 shows the decorative chain group of this utility model one embodiment, and this decorative chain group includes the attaching plug 1 of accessible civil power, the main switch 5 being connected plug 1 by power line and the two string decorative chains 2 being connected in parallel in main switch 5 by power line.Here, for convenience of description and prevent ambiguity, hereafter decorative chain 2 is referred to as lamp series circuit 2.
Each lamp series circuit 2 is connected in series on composition, and each lamp series circuit 2 by multiple LED and is all connected with a protection control circuit 3.May be appreciated; this utility model lamp string is not limited only to include two lamp series circuits 2, it is also possible to include one or three or more than three, when including multiple lamp series circuit; multiple lamp series circuits are connected in parallel, and each branch road all can arrange a protection control circuit 3.Protection control circuit 3 is mainly used in when the line current of corresponding lamp series circuit 2 is equal to or more than a preset value electrically isolating this lamp series circuit 2 and attaching plug 3, thus protects remaining normal lamp bead.Protection control circuit 3 also can realize flicker control and the flash pattern handoff delay of this cluster of lamps, ornamental series circuit.
Each protection control circuit 3 is arranged on a printed substrate, and printed substrate is encapsulated in an insulation shell.One end of this printed substrate arranges an electrode input end and a negative input, and the wiring board other end arranges a cathode output end and a cathode output end.Two electric wires stretched out from attaching plug are connected with electrode input end and a negative input of wiring board respectively.The electrode input end of wiring board is drawn an electric wire the most respectively and is connected with electrode input end and a negative input of the printed substrate of the protection control circuit on the road of another ornament lamp series connection, to realize the parallel connection of two lamp series circuits with negative input.The cathode output end of wiring board with cathode output end respectively two ends with corresponding lamp series circuit be connected.Concrete, insulation shell has string holes, the electric wire stretched out from attaching plug and the electric wire of lamp series circuit insert insulation shell from string holes and are fixed on printed substrate, and terminal corresponding with on wiring board is electrically connected with.
The design of the structure of the lamp in lamp series circuit 2 makes when the lamp bead of lamp comes off from decorative chain or lamp bead is burnt, decorative chain not open circuit, and distribution raises to the voltage on the lamp of the normal work of residue.Particularly, lamp bead uses LED.In one embodiment, as in figure 2 it is shown, each lamp in lamp series circuit 2 all includes that a lamp bead 51, houses lamp socket 52 and the connection seat 53 of a collecting lamp socket 52 of lamp bead 51 bottom.At least two lamp base is downwardly extended out in lamp bead 51.Lamp socket 52 includes the resettlement section for housing lamp bead bottom, the guide pad being connected to lower end, resettlement section and the inserted sheet 521 downwardly extended out from guide pad lower end.The string holes that at least two lamp base 512 of lamp bead 51 is formed from lamp socket sidewall is stretched out, and bends then up, is attached to the outer wall surface of resettlement section.Connecting seat is hollow form, its medial wall is provided with at least two and separates the electric-conductor 54 arranged.Lamp socket is separable to be contained in connection seat, and at least two separates the electric-conductor arranged and makes electrical contact with corresponding lamp base respectively.Each electric-conductor all includes the first conductive part and the second conductive part electrically connected with the first conductive part.When lamp socket is contained in connection seat, the electrical contact of the first conductive part of electric-conductor and corresponding lamp base, the second conductive part of at least two electric-conductor is separated to realize electrically insulating by inserted sheet.When lamp socket is disconnected, the second conductive part electrical connection of at least two electric-conductor.
Fig. 3 shows the part-structure schematic diagram of the protection control circuit of decorative chain in this utility model preferred embodiment.Wherein, protection control circuit mainly include rectification circuit D1, on-off circuit 11, as the sampling resistor R7 of sample circuit with include the control circuit of control chip U1.
Rectification circuit D1 is for being converted to unidirectional current from output terminals A C1 of attaching plug 1 and the alternating current of AC2 output, the present embodiment uses diode rectifier bridge, the input of its cathode output end connecting valve circuit 11, its cathode output end ground connection, or be connected to hold altogether.For convenience of describing, what " ground connection " hereinafter related to referred both to be connected in circuit holds altogether.
On-off circuit 11 mainly includes the first switch element and second switch unit, and has two outfans that two ends with lamp series circuit 2 respectively are connected: the first outfan J1 and the second outfan J2.When first Switching Power Supply of on-off circuit 11 and second switch unit are respectively turned on, the first and second outfan J1, J2 export high level respectively, so that lamp series circuit 2 is lighted and extinguishes.
In the present embodiment, as it is shown on figure 3, the first switch element includes the first switching tube Q1, the 4th switching tube Q4 and balance resistance element R4.Second switch unit includes second switch pipe Q2, the 3rd switching tube Q3 and above-mentioned balance resistance element R4.Wherein, all resistance elements related in this specification are the electronic devices and components that pure resistance maybe can be equivalent to pure resistance, such as impedor etc..First end of the first switching tube Q1 and second switch pipe Q2 is connected by the cathode output end of a resistance element R1 and rectification circuit D1, and its second end two ends with the 3rd switching tube Q3 and second end of the 4th switching tube Q4 and balance resistance element R4 respectively are connected.The end that controls of the first switching tube Q1 is connected by second end of a resistance element R2 and second switch pipe Q2, and the end that controls of second switch pipe Q2 is connected by second end of a resistance element R3 and the first switching tube Q1.First end of the 3rd switching tube Q3 and the 4th switching tube Q4 passes through sampling resistor R7 ground connection (the i.e. cathode output end of rectification circuit D1, or end altogether), it is controlled end and is connected by two outfan OC2 and OC1 of resistance element R6 with R5 and the control chip U1 of control circuit respectively.The two ends of balance resistance element R4, namely second end of second end of the first switching tube Q1 and second switch pipe Q2 is respectively as the first and second outfan J1 and J2 of on-off circuit 11.
Wherein, the setting of the cast of first to fourth switching tube Q1, Q2, Q3 and Q4 makes when the 4th switching tube Q4 turns under the control of control chip U1, first switching tube Q1 can turn on, and the 3rd switching tube Q3 is when turning under the control of control chip U1, second switch pipe Q2 can turn on, and in same time point, the first and second switching tubes, only have one can turn on.It is arranged such so that the current potential of the first and second outfan J1 and J2 always has one, and for high level, another is low level, thus the lamp series circuit being connected to the first and second outfan J1 and J2 can realize flashing function.
In the present embodiment, the first switching tube Q1 and second switch pipe Q2 uses PNP type triode, the 3rd switching tube Q3 and the 4th switching tube Q4 to use NPN type triode.First end of above mentioned first to fourth switching tube is emitter stage, and the second end is colelctor electrode, controls end and is base stage.In other embodiments, first to fourth switching tube also can use MOSFET(Metal-Oxide-Semiconductor
Field-Effect Transistor, insulating gate type field effect tube), the switching tube such as IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor).
Sample circuit is for detecting the line current of lamp series circuit 2; thus protection control circuit 3 can be made to judge when this line current is equal to or more than a preset value, and the lamp bead of lamp series circuit is damaged or drops too much; and then control on-off circuit 11 electrically isolates lamp series circuit 2 and attaching plug 3, remaining normal lamp bead is protected to burn.Described line current refers to protect in control circuit, can obtain flowing through the electric current of the electric current in lamp series circuit 2 by certain reckoning.In the present embodiment, sampling resistor R7 is connected between the emitter stage of the 3rd switching tube Q3 and the 4th switching tube Q4 and ground (namely the cathode output end of rectification circuit D1, or end altogether), and the sampling end FB of control chip U1 samples from the high level end of sampling resistor R7.In other embodiments, sampling resistor R7 can be omitted, the emitter stage of the 3rd switching tube Q3 and the 4th switching tube Q4 can be directly grounded, the sampling end FB of control chip U1 can be directly connected to the cathode output end of rectification circuit D1, or first end of the first switching tube Q1, or the two ends of balance resistance element R4, by detecting the voltage of these points, through certain simple computation, all can extrapolate the electric current flowing through lamp series circuit 2, thus can determine that the situation that the lamp bead of lamp series circuit is damaged or dropped.
Control circuit controls the first switch element of on-off circuit 11 when the sampled voltage exported at sample circuit equals to or more than a predeterminated voltage and second switch unit remains open and can control the first switch element when sampled voltage is less than predeterminated voltage and second switch units alternately turns on so that the lamp series circuit being connected on outfan J1 and J2 of on-off circuit is lighted and extinguishes.
Control chip U1 has a power end VCC, a zero passage detection end ZE, a sampling end FB, an earth terminal GND, two outfan OC1 with OC2 and second associate input De1 and the 3rd association input De2.In the present embodiment, outside at control chip U1, power supply circuits 13 shown in power end VCC with Fig. 5 are connected, zero cross detection circuit 12 shown in zero passage detection end ZE with Fig. 5 is connected, the high level end of sampling end FB and sampling resistor R7 is connected, earth terminal GND ground connection, and two outfan OC1 with OC2 base stage with the 4th switching tube Q4 and the 3rd switching tube Q3 respectively is connected, second association input De1 is unsettled, and the 3rd association input De2 is by diode ground connection (not shown).
Fig. 4 shows the internal structure schematic diagram of control chip U1 in a preferred embodiment.Control chip U1 mainly includes a clock oscillation, an exception handling circuit, an electric power management circuit, a flash controller, a reference voltage source UL, a comparison amplifier U2, two triggers U3, U4 and the 5th switching tube and the 6th switching tube Q5, Q6.In the present embodiment, the 5th switching tube Q5 and the 6th switching tube Q6 uses NPN type triode, and both the first ends are emitter stage, and the second end is colelctor electrode, controls end and is base stage.In other embodiments, the 5th and the 6th switching tube also can use the switching tubes such as MOSFET, IGBT.
Wherein, clock oscillation provides clock signal for chip internal element, although Fig. 4 illustrate only clock oscillation be connected with exception handling circuit, but it will be understood by those skilled in the art that also other need the element of clock signal to connect to clock oscillation in chip.
Electric power management circuit is connected with second end (the most also for outfan OC) of power end VCC, the 5th switching tube Q5 and the 6th switching tube Q6.Electric power management circuit has the electric energy of burning voltage by power end VCC from the outside acquisition of control chip U1, and be chip internal circuits, power such as but not limited to the 5th switching tube Q5 and second end of the 6th switching tube Q6, comparison amplifier U2, trigger U3, trigger U4 and clock oscillation.
Reference voltage source UL is for providing a reference voltage.
The positive input of comparison amplifier U2 is connected with sampling end FB by resistance element R8, and its reverse input end accesses reference voltage, and its outfan connects exception handling circuit.
Exception handling circuit connects the control end of the 5th switching tube Q5 by trigger U3, and is connected the control end of the 6th switching tube Q6 by trigger U4.First end of the 5th switching tube Q5 connects earth terminal GND, and its second end connects the first outfan OC1, and first end of the 6th switching tube Q6 connects earth terminal GND, and its second end connects the second outfan OC2.
Flash controller is connected with the control end controlling end and the 6th switching tube Q6 of power end VCC, the 5th switching tube Q5, it is for alternately exporting conductivity control signal (generally square-wave signal) to the 5th switching tube Q5 and the 6th switching tube Q6, to control the 5th switching tube Q5 and the 6th switching tube Q6 alternate conduction, so that the first and second outfan OC1 and OC2 interleaved ground, make the 4th switching tube Q4 and the 3rd switching tube Q3 alternately cut-off, it is achieved the lighting and extinguish of lamp series circuit 2.
Owing to the voltage of rectification circuit D1 output is that magnitude of voltage is between 0V to 290V or 310V, when the voltage of rectification circuit D1 output is less than certain numerical value (can according to the computing the resistor value of resistance element R1, R4, R7 and first to fourth switching tube out), owing to output is not high enough to the voltage of the first switching tube and the emitter stage of second switch pipe Q1 and Q2, first switching tube Q1 or second switch pipe Q2 cannot be according to setting normally, thus lamp string this but cannot normally light when lighting, affect flicker effect.In order to the work making lamp series circuit 2 is more stable, this utility model is also provided with one for the frequency or the zero cross detection circuit of voltage that detect the electric current that rectification circuit D1 exports.Please also refer to Fig. 5, in the present embodiment, zero cross detection circuit 12 includes stabilivolt D2 and three resistance elements R9, R10 and R11.Wherein, resistance element R9 is connected between the cathode output end of rectification circuit D1 and the negative electrode of stabilivolt D2.The plus earth of stabilivolt D2, its negative electrode is also by the resistance element R10 being connected in series and R11 ground connection.The junction point of resistance element R10 and R11 being connected in series connects the flash controller of control chip U1.So, pass through zero cross detection circuit, control chip U1 can detect that the voltage that rectification circuit D1 exports, thus flash controller can just control the first switching tube unit or the conducting of second switch pipe unit when the voltage of rectification circuit D1 output is more than certain numerical value, guarantee that the time point that lamp string is lighted is positioned near the peak value of the voltage that rectification circuit D1 exports, do not have this bright situation about not working.
In the present embodiment, flash controller can have multiple flash pattern, such as quick flashing, slow flash, irregular flicker etc..The switching of flash pattern can use remote pilot, it is possible to uses main switch to control.Existing lamp string is many to be stepped on switch (i.e. main switch) by a foot and is connected on civil power, steps on switch by this foot and concatenates lamp into civil power or disconnection.When adopt tramp with one's feet on-off control flash pattern time, may be configured as quickly trampling a foot and step on switch and switch for flash pattern, trample for a long time when foot steps on switch as closedown power supply.
For realizing this function, the power supply circuits powered for the power end of control chip U1 need to have large bulk capacitance, and such as but not limited to power supply circuits 13 as shown in Figure 5, these power supply circuits 13 are that the power end of control chip U1 is powered, it includes diode D3, electric capacity C1 and electrochemical capacitor C2.The anode of diode D3 is connected by the cathode output end of resistance element R9 and rectification circuit D1, the power input VCC of its negative electrode and control chip U1, one end of electric capacity C1, the positive pole of electrochemical capacitor C2 are connected, the other end of electric capacity C1 and the minus earth of electrochemical capacitor C2.So, when quickly trampling a foot and stepping on switch, the of short duration power down of rectification circuit D1, the voltage of power input VCC can of short duration decline, when flash controller detects that the voltage of power input VCC is reduced to certain value (such as 2.5 volts), switch flash pattern.It should be understood that flash controller also can have memory function.Thus the long-time power-off of lamp string, then after powering on, lamp string can flash according to the flash pattern of last time.
In order to realize " horse race " function in decorative chain group, flash controller has delay circuit, thus also has delay function, when can the control signal of the time delay different flash pattern of output.Additionally, power input VCC is also as the first association input, zero passage detection end ZE is as the 4th association input.Flash controller can determine when receiving the instruction of flash pattern switching according to mutual annexation between power input VCC, the second association input De1, the 3rd association input De2 and zero passage detection end ZE, the delay time of time delay switching flash pattern.In the present embodiment, when power input VCC and second association input De1 links together, second association input De1 is changed into identical with the output of power input VCC by original vacant state, when flash controller detects this change, the delay time controlling switching flash pattern is t1.When the second association input De1 and the 3rd association input De2 links together, second association input De1 is changed into the state by diode ground connection by original vacant state, when flash controller detects this change, the delay time controlling switching flash pattern is t2.When the 3rd association input De2 and zero passage detection end ZE links together, 3rd association input De2 is changed into the state exporting Tong Bu change with zero passage detection end ZE by the original state by diode ground connection, when flash controller detects this change, the delay time controlling switching flash pattern is t3.Wherein delay time is t1, t2 with t3 numerical value is different, preferably may be configured as t1 < t2 < t3, thus, when delay time be respectively 0, four cluster of lamps, ornamental series circuit 2(of t1, t2 and t3 namely four string decorative chain) be wrapped on Christmas tree successively time, often switch, by total control switch, the state that once flashes, then four string decorative chains can switch flicker state successively rather than simultaneously, it is achieved that the effect of " horse race ".Carry out signal exchange also by power line between each lamp series circuit and control the horse race time difference, only in this way could control to use for a long time and will not disorderly walk.
In the present embodiment, main switch is connected to consecutive lamp series circuit, and four the most a string association inputs are not attached to mutually, thus its flash pattern switches immediately, power input VCC and the second association input De1 of another string is connected, thus its flash pattern time delay t1 switching.
The exception handling circuit realized in dependence control chip U1 of the over-current detection function in this utility model and trigger U3, U4.When sampled voltage is more than or equal to reference voltage, comparison amplifier U2 output is reversely, after exception handling circuit obtains the signal that this is reverse, R and the S end of trigger U3 and U4 is delivered to respectively with different sequential, it is locked to high level (more than or equal to 0.7V) with the output end voltage by trigger U3 and U4, thus the 5th and the 6th switching tube Q5 and Q6 conducting, OC1 and OC2 end is locked to low level (ground connection), third and fourth switching tube Q3 and Q4 is locked to cut-off state, and lamp series circuit 2 power-off is extinguished.Now, unless the long-time power-off of power input VCC, otherwise trigger U3 and U4 will not reset.
Concrete, in work, when attaching plug 1 inserts socket, from electricity network power taking, mains electric rectification is unidirectional current by rectification circuit D1, is that the first and second switching tube Q1 and Q2 power by the first resistance element R1, and is that control chip U1 powers by power supply circuits.Zero cross detection circuit detects the voltage condition of rectification circuit D1 output in real time, and flash controller gives the 5th and the 6th switching tube Q5 and Q6 according to above-mentioned voltage condition output square-wave signal, controls both alternate conduction.When Q5 turns on, Q6 ends, the voltage of OC1 end is low level (ground voltage), the voltage of OC2 end is high level (voltage of electric power management circuit output), 3rd switching tube Q3 conducting, 4th switching tube Q4 cut-off, the base voltage of second switch pipe Q2 is pulled to low level (ground voltage), thus second switch pipe Q2 is also switched on, and (now the emitter stage of the first switching tube Q1 is identical with the voltage of base stage, thus cannot turn on), resistance element R1 is flowed through from the electric current of rectification circuit D1 output, second switch pipe Q2, balance resistance element R4, 3rd switching tube Q3 and sampling resistor R7 returns to the cathode output end of rectification circuit D1.So, the voltage of the first outfan J1 is less than the second outfan J2, and when lamp series circuit 2 forward is connected between J1 and J2, lamp string extinguishes.When Q6 turns on, Q5 ends, the voltage of OC1 end is high level (voltage of electric power management circuit output), the voltage of OC2 end is low level (ground voltage), 3rd switching tube Q3 cut-off, 4th switching tube Q4 conducting, the base voltage of the first switching tube Q1 is pulled to low level (ground voltage), thus the first switching tube Q1 is also switched on, and (now the emitter stage of second switch pipe Q2 and the voltage of base stage are identical, thus cannot turn on), resistance element R1 is flowed through from the electric current of rectification circuit D1 output, first switching tube Q1, balance resistance element R4, 4th switching tube Q4 and sampling resistor R7 returns to the cathode output end of rectification circuit D1.So, the voltage of the first outfan J1 is higher than the second outfan J2, and when lamp series circuit 2 forward is connected between J1 and J2, lamp string is lighted.Period, the of short duration preset value that drops to of voltage of power end VCC can be made by fast shut-off and recovery rectification circuit D1 and the connection of civil power AC1, AC2 end, control flash controller switching flash pattern.
Meanwhile, after decorative chain powers on, control chip U1 carries out sampling by sampling resistor R7 to line current and obtains a sampled voltage.The reference voltage that this sampled voltage and reference voltage source export is compared by comparison amplifier U2.When sampled voltage is less than reference voltage, it is constant that exception handling circuit does not sends signal, trigger U3 and U4 output signal to trigger U3 and U4, and the 5th and the 6th switching tube Q5, Q6 is only controlled by flash controller, and lamp string normally flashes.When sampled voltage is equal to or more than reference voltage, comparison amplifier U2 output is reversely, after exception handling circuit obtains the signal that this is reverse, R and the S end of trigger U3 and U4 is delivered to respectively with different sequential, the output end voltage of trigger U3 and U4 to be locked to high level (more than or equal to 0.7V) simultaneously, thus the 5th and the 6th switching tube Q5, Q6 is locked to conducting state, OC1 and OC2 end is locked to low level (ground connection), third and fourth switching tube Q3, Q4 is locked in cut-off state simultaneously, and decorative chain maintains OFF state.It should be understood that by reasonably configuration resistance R7, R8 and the parameter of reference voltage source, can realize coming off or the quantity burnt reaches certain value and makes when the lamp bead of decorative chain, comparison amplifier is triggered, it is achieved the purpose that decorative chain power-off is extinguished.Now, only by decorative chain power-off, the voltage making the power end VCC of control chip U1 will be for 0V, and trigger U3, U4 reset, and the lamp bead damaged is replaced, and the position of disappearance lamp bead is filled lamp bead, and then lamp string re-powers, and decorative chain just can normally work.
In the present embodiment, trigger U3, U4 use rest-set flip-flop.It should be understood that when functions such as circuit have more, the most anti-lightning strike, power protection, it is also possible to use other kinds of trigger.During output level type change when comparison amplifier judges overvoltage, the first switching tube can also use other kinds of switching tube.
In another embodiment, the circuit structure of protection control circuit is identical with previous embodiment, except for the difference that, as shown in Figure 6, first and second outfan J1 of each protection control circuit 3, between J2, a positive and a negative connects two cluster of lamps, ornamental series circuits 2, namely on the first outfan J1 and the second outfan J2 of on-off circuit 11, it is connected in parallel opposite polarity two cluster of lamps, ornamental of two strings, during this two cluster of lamps, ornamental luminescence, color is different, thus physically this two cluster of lamps, ornamental always has a cluster of lamps, ornamental luminous, but color alternate, realize the variation of cluster of lamps, ornamental light-emitting mode, simultaneously, owing to always having a cluster of lamps, ornamental to be lit at a time point, the load of circuit is more stable, circuit can stable operation.In other embodiments, also can be connected in parallel the cluster of lamps, ornamental series circuit that two strings are above between first and second outfan J1, J2, a part of forward connects, a part of Opposite direction connection, and different lamp series circuits preferably employs the lamp bead of different colours, decorative effect is more preferable.
To sum up; decorative chain of the present utility model have employed protection control circuit; owing to have employed reference voltage source; make to control exactly accurate; when the quantity of the lamp bead come off in circuit or burn out reaches default quantity, causes line current to increase to a preset value, protection control circuit line disconnection is powered; avoid the lamp bead normally worked to burn or burn on fire, it is to avoid causing further loss.On user replaces the lamp bead burnt out or supplements on the lamp lack lamp bead after lamp bead, decorative chain can normally use again.Additionally, lamp string can realize the flicker of various modes, colour flicker effect also can be realized, ornamental more preferable；By arranging at least two association input, and at least two between different decorative chain is made to associate the connection status difference of input to realize the asynchronous switching of flash pattern, it is achieved horse race function.Protection control circuit only includes a rectification circuit, four switching tubes, seven resistance elements, stabilivolts; one diode; one electric capacity, a DC capacitor and a chip can be substituted in parallel resistance or diode on each lamp; circuit structure is simpler, and decorative chain cost, caloric value and energy consumption are all substantially reduced.
Although description of the present utility model being combined embodiments above carry out, but, those skilled in the art can carry out many replacement, modifications and variations according to above-mentioned content, be apparent from.Therefore, all such replacements, improve and change in the spirit and scope being included in appended claims.
Claims (9)
1. a decorative chain; including the most a string lamp series circuit being made up of multiple lamps; the design of the structure of described lamp makes when the lamp bead of lamp comes off from decorative chain or lamp bead is burnt; decorative chain not open circuit; and distribution raises to the voltage on the lamp of the normal work of residue, between described lamp series circuit and power input, it is also associated with electrically isolating the protection control circuit of described lamp series circuit and power input when the line current of described decorative chain is equal to or more than a preset value；Described protection control circuit includes:
For the alternating current from described power input is converted to galvanic rectification circuit；
On-off circuit, its input is connected with the cathode output end of described rectification circuit, and it includes the first switch element and second switch unit, and has two outfans that two ends with described lamp series circuit respectively are connected；
For described line current being sampled and exporting the sample circuit of a sampled voltage；And
For controlling the first switch element of described on-off circuit when described sampled voltage is equal to or more than a predeterminated voltage and second switch unit remains open and can control the first switch element and the conducting of second switch units alternately when sampled voltage is less than predeterminated voltage so that described at least one cluster of lamps, ornamental series circuit control circuit lighting and extinguish；It is characterized in that,
Described control circuit includes at least two association input pin and a delay circuit that can postpone output time according to the control signal of control circuit described in the confirming electrical connection status between said two association input pin.
Decorative chain the most according to claim 1, it is characterised in that described control circuit includes:
One exception handling circuit；
One reference voltage source that a reference voltage can be provided；
One comparison amplifier, one input is as the sampling end of described control circuit, and its another input accesses described reference voltage, and its outfan connects described exception handling circuit；
One electric power management circuit being connected with the power input of control circuit；
One the 5th switching tube, its first end ground connection, its second end, as an outfan of described control circuit, is connected with described electric power management circuit simultaneously, and it is controlled end and is connected with exception handling circuit by the first trigger；
One the 6th switching tube, its first end ground connection, its second end, as another outfan of described control circuit, is connected with described electric power management circuit simultaneously, and it is controlled end and is connected with exception handling circuit by the second trigger；And
One is connected with the control end of described 5th switching tube and the 6th switching tube, respectively for alternately exporting the flash controller of conductivity control signal to the 5th switching tube and the 6th switching tube；
Described flash controller also serves as described delay circuit, described power input is as the first association input pin, described control circuit also includes that the second association input pin and the 3rd association input pin, described first association input pin, the second association input pin and the 3rd association input pin are all electrically connected with described flash controller.
Decorative chain the most according to claim 2, it is characterised in that described 5th and the 6th switching tube is NPN type triode, its first end is emitter stage, and its second end is colelctor electrode, and it controls end is base stage.
Decorative chain the most according to claim 2, it is characterized in that, also include the zero cross detection circuit being connected between the flash controller of described control circuit and described rectification circuit, described zero cross detection circuit includes the stabilivolt of a cathode output end being connected to rectification circuit by resistance element, the plus earth of stabilivolt, the negative pole of stabilivolt passes through two resistance element ground connection being connected in series, and the junction point of the resistance element that said two is connected in series connects the flash controller of described control circuit；Connect described flash controller and associate input pin with the pin of the control circuit of zero cross detection circuit as second.
Decorative chain the most according to claim 4, it is characterized in that, also include the power supply circuits powered for the power input of described control circuit, described power supply circuits include that the diode that anode is connected with the negative pole of described stabilivolt, negative electrode is connected with described power input, described power supply circuits also include being connected to electric capacity between described power input and ground, that be connected in parallel and electrochemical capacitor.
6. a decorative chain; the lamp series circuit being made up of multiple lamps including two strings; the design of the structure of described lamp makes when the lamp bead of lamp comes off from decorative chain or lamp bead is burnt; decorative chain not open circuit; and distribution raises to the voltage on the lamp of the normal work of residue, between described two cluster of lamps, ornamental series circuits and power input, it is also associated with electrically isolating the protection control circuit of described lamp series circuit and power input when the line current of described decorative chain is equal to or more than a preset value；Described protection control circuit includes:
On-off circuit, it has two outfans, the described two a string forwards of cluster of lamps, ornamental series circuit, a string oppositely connects between the two outputs；
For described line current being sampled and exporting the sample circuit of a sampled voltage；And
Remain open for controlling described on-off circuit when described sampled voltage is equal to or more than a predeterminated voltage and can control, when sampled voltage is less than predeterminated voltage, the control circuit that described on-off circuit is alternately lighted and extinguished described two cluster of lamps, ornamental series circuits；It is characterized in that, described control circuit includes at least two association input pin and a delay circuit that can postpone output time according to the control signal of control circuit described in the confirming electrical connection status between said two association input pin.
Decorative chain the most according to claim 6, it is characterised in that described control circuit includes:
One exception handling circuit；
One reference voltage source that a reference voltage can be provided；
One comparison amplifier, one input is as the sampling end of described control circuit, and its another input accesses described reference voltage, and its outfan connects described exception handling circuit；
One electric power management circuit being connected with the power input of control circuit；
One the 5th switching tube, its first end ground connection, its second end, as an outfan of described control circuit, is connected with described electric power management circuit simultaneously, and it is controlled end and is connected with exception handling circuit by the first trigger；
One the 6th switching tube, its first end ground connection, its second end, as another outfan of described control circuit, is connected with described electric power management circuit simultaneously, and it is controlled end and is connected with exception handling circuit by the second trigger；
One is connected with the control end of described 5th switching tube and the 6th switching tube, respectively for alternately exporting the flash controller of conductivity control signal to the 5th switching tube and the 6th switching tube；And
It is connected to the zero cross detection circuit between the flash controller of described control circuit and described power input, described zero cross detection circuit includes that one connects the stabilivolt of power input by resistance element, the plus earth of stabilivolt, the negative pole of stabilivolt passes through two resistance element ground connection being connected in series, and the junction point of the resistance element that said two is connected in series connects the flash controller of described control circuit；
Described flash controller also serves as described delay circuit, described power input is as the first association input pin, described control circuit also includes the 3rd association input pin, connects described flash controller and associates input pin with the pin of the control circuit of zero cross detection circuit as the 3rd；Described first association input pin, the second association input pin and the 3rd association input pin are all electrically connected with described flash controller.
8. a decorative chain group, including the plug of accessible civil power, the main switch being connected plug by power line and detachably connectable the first decorative chain in main switch and the second decorative chain, it is characterized in that, described first and second decorative chains use decorative chain as claimed in claim 1, first association input pin of described first decorative chain is as the power input of its control circuit, and the second association input pin is unsettled；First association input pin of described second decorative chain connects the first association input pin as the power input of its control circuit, the second association input pin.
Decorative chain group the most according to claim 8, it is characterized in that, the most detachably connectable in described main switch have the 3rd decorative chain, described 3rd decorative chain uses decorative chain as claimed in claim 1, and also include the 3rd association input pin as zero passage detection terminal, first association input pin of described 3rd decorative chain connects the 3rd association input pin as the power input of its control circuit, the second association input pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620376305.7U CN205596428U (en) | 2016-04-29 | 2016-04-29 | Decorative chain and decorative chain group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620376305.7U CN205596428U (en) | 2016-04-29 | 2016-04-29 | Decorative chain and decorative chain group |
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| CN205596428U true CN205596428U (en) | 2016-09-21 |
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| CN201620376305.7U Active CN205596428U (en) | 2016-04-29 | 2016-04-29 | Decorative chain and decorative chain group |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114900533A (en) * | 2022-05-11 | 2022-08-12 | 江苏领焰智能科技股份有限公司 | Dimming data synchronization method, system, equipment and storage medium based on Ethernet |
| US11692679B1 (en) | 2022-12-02 | 2023-07-04 | Chengzhuo Yang | Waterfall string light |
-
2016
- 2016-04-29 CN CN201620376305.7U patent/CN205596428U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114900533A (en) * | 2022-05-11 | 2022-08-12 | 江苏领焰智能科技股份有限公司 | Dimming data synchronization method, system, equipment and storage medium based on Ethernet |
| CN114900533B (en) * | 2022-05-11 | 2023-10-03 | 江苏领焰智能科技股份有限公司 | Dimming data synchronization method, system, equipment and storage medium based on Ethernet |
| US11692679B1 (en) | 2022-12-02 | 2023-07-04 | Chengzhuo Yang | Waterfall string light |
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