CN201028351Y

CN201028351Y - Partially blinkable string lights

Info

Publication number: CN201028351Y
Application number: CNU2007201193596U
Authority: CN
Inventors: 张东方
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-04
Filing date: 2007-04-04
Publication date: 2008-02-27
Anticipated expiration: 2017-04-04

Abstract

The utility model relates to a light string that can partially flash. In order to solve the problem that traditional light strings can only flash as a whole, in the utility model, a branch is formed by connecting a plurality of light groups in series in sequence, and at least one of them is a flashing light group, and the rest are non-flashing light groups; in each flashing light group, a flashing control circuit and a freewheeling circuit are also included, and the first and second input ends of the flashing light group drawn from two adjacent light groups are connected to the freewheeling circuit, and the freewheeling circuit is further connected to the flashing control circuit, and the flashing control circuit supplies power to the light-emitting lamps in the flashing light group. For each flashing light group, when the light-emitting lamp (usually an LED) therein is turned off due to the flashing control, the freewheeling circuit can provide freewheeling for the entire light string, thereby ensuring the normal light emission of other non-flashing light groups. In the light string of the utility model, some light groups can be on for a long time, while other light groups can flash, thereby creating a better decorative effect.

Description

But the lamp string of partly flickering

Technical field

The utility model relates to decorative chain, more particularly, but relates to a kind of lamp string of partly flickering.

Background technology

In the festival celebration dates such as the Spring Festival, Christmas Day, people can hang various ornament lamps usually and decorate room, corridor, Christmas tree etc., and what wherein use morely is LED lamp string, also have to use small-sized osram lamp as electroluminescent lamp in some lamp strings.

Be a kind of common LED lamp string as shown in Figure 1, wherein simply series connection between each LED is connected with working power (can be direct current or AC power) then.After the energising, each LED in the lamp string is simultaneously luminous, does not have flicker effect.On the basis of LED lamp string shown in Figure 1, can set up a flicker control circuit, as shown in Figure 2, this flicker control circuit is serially connected with power input, under its control, so LED produces the effect of flicker work.

Yet, at different places or different users's preference, wish to have only in the lamp string one or more lamp flickers sometimes, other keep long bright.Lamp string shown in Figure 2 then can not be realized this point, and the lamp string that traditional osram lamp is made then more can not be realized this point.

The utility model content

At the above-mentioned defective of prior art, the utility model will solve the problem that the conventional lights string can only whole flicker, and allowing can have the flicker of part electroluminescent lamp in the same lamp string.

For solving the problems of the technologies described above, but the utility model provides a kind of lamp string of partly flickering, comprising one or more branch road; Comprise a plurality of lamp groups in each bar branch road, series connection successively comprises at least one electroluminescent lamp in each lamp group between described a plurality of lamp groups; It is characterized in that having at least to be a flashing lamp group in described a plurality of lamp groups, all the other are non-flashing lamp group; In each described flashing lamp group, also comprise flicker control circuit and freewheeling circuit, first, second input of this flashing lamp group that attracts from adjacent two lamp groups is connected to described freewheeling circuit, described freewheeling circuit is connected to described flicker control circuit again, the power supply of the electroluminescent lamp in this flashing lamp group again of described flicker control circuit.

In first kind of priority scheme of the present utility model, described freewheeling circuit comprises Zener diode Z1, its negative pole is connected with the first input end of this flashing lamp group and is connected with the working power anode of described flicker control circuit, and its positive pole is connected with second input of this flashing lamp group and is connected with the working power negative terminal of described flicker control circuit.

In second kind of priority scheme of the present utility model, described freewheeling circuit comprises resistance R, the one end is connected with the first input end of this flashing lamp group and is connected with the working power anode of described flicker control circuit, and the other end is connected with second input of this flashing lamp group and is connected with the working power negative terminal of described flicker control circuit.

In the third priority scheme of the present utility model, described freewheeling circuit comprises capacitor C, its anode is connected with the first input end of this flashing lamp group and is connected with the working power anode of described flicker control circuit, and its negative terminal is connected with second input of this flashing lamp group and is connected with the working power negative terminal of described flicker control circuit.

At the scheme of using the capacitor C afterflow, can in the described freewheeling circuit of each described flashing lamp group, set up commutation diode D1, D2; Described diode D1 forward is connected between the anode of the first input end of this flashing lamp group and described capacitor C; Described diode D2 oppositely is connected between first, second input of this flashing lamp group.This moment, whole lamp string can be by ac power supply.In addition, also available Zener diode Z2 replaces above-mentioned commutation diode D2.At this moment, in each non-flashing lamp group, a LED and the protection diode of reverse parallel connection with it can be set; Described protection diode can be commutation diode or Zener diode or switching diode or the 2nd LED that mates with a described LED.

In each lamp group of the present utility model, can adopt LED or osram lamp as electroluminescent lamp; At each described flashing lamp group, can be connected with second input with the first input end of this flashing lamp group by connect-disconnect structure.

In the lamp string of the present utility model, can comprise many described each bar branch road, and parallel with one another on circuit between each bar branch road, be connected to the utility power line that is used to introduce working power.

Adopt after the scheme of the present utility model, be equipped with a freewheeling circuit at each flashing lamp group, during electroluminescent lamp in this lamp group was controlled because of glimmering and is turned off, freewheeling circuit can be whole lamp string afterflow is provided, thereby can guarantee the normally luminous of other non-flashing lamp groups.In same lamp string, one or more flashing lamp groups can be arranged, thereby make the part electroluminescent lamp in the lamp string long bright, other electroluminescent lamps then glimmer, and then can build better decorative effect.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the schematic diagram of a kind of lamp string in the prior art;

Fig. 2 is the schematic diagram of a kind of lamp string that can whole flicker in the prior art;

Fig. 3 is the schematic diagram of the lamp string among the utility model embodiment one;

Fig. 4 is the schematic diagram of the lamp string among the utility model embodiment two;

Fig. 5 is the schematic diagram of the lamp string among the utility model embodiment three;

Fig. 6 is the schematic diagram of the lamp string among the utility model embodiment four;

Fig. 7 is the schematic diagram of the lamp string among the utility model embodiment five;

Fig. 8 is the schematic diagram of the flicker control circuit that cooperates with Fig. 3;

Fig. 9 is the schematic diagram of the flicker control circuit that cooperates with Fig. 5.

The specific embodiment

Among the utility model embodiment one, but the circuit connecting relation of the lamp string of partly flickering is as shown in Figure 3, as can be seen from the figure, and comprising a plurality of non-flashing lamp groups 101 and a flashing lamp group 102.In flashing lamp group 102, comprise a LED, a flicker control circuit 103 and a freewheeling circuit 104 again.In the present embodiment, adopt Zener diode Z1 as continued flow component, when the flicker control circuit turn-offed the LED in this flashing lamp group, Zener diode Z1 can be reversed puncture, thereby guarantees that other non-flashing lamp group can work on.

For flicker control circuit 103 wherein, can adopt ripe prior art, be illustrated in figure 8 as one of them embodiment, wherein used the flicker control chip of a model as JB6303B.JB6303B is a kind of IC that promotes 3 kinds of colors (R, G, B) LED flicker that the brilliant precious Science and Technology Ltd. in Taiwan produces; It is gradually dark that the automatically flicker of back of connecting with the mains, flashing mode are that three lamps alternately get brighter, 45 ° of phase differences, and flicker frequency decided at the higher level but not officially announced, single lamp got brighter gradually secretly once about 3 seconds.Fig. 8 only therein an output pin met a LED.

In conjunction with Fig. 3 and Fig. 8, in flashing lamp group 102, the negative pole of Zener diode Z1 is connected with the first input end 10 of this flashing lamp group, is connected to the working power anode VDD of flicker control chip among Fig. 8 again; The positive pole of Zener diode Z1 is connected with 11 of this flashing lamp group, is connected to the working power negative terminal VSS of flicker control chip among Fig. 8 again, that is to say, Zener diode Z1 provides dc supply for the flicker control chip.Three output RL, GL, BL are arranged in the flicker control chip shown in Figure 8, and the LED in the flashing lamp group 102 is parallel with one another, is connected between output RL and the working power negative terminal VSS again.Having on the market at present and will glimmer control chip with the integrated product of LED, if directly buy this series products, then only need externally connect freewheeling circuit 104 and get final product, then is to connect Zener diode Z1 in the present embodiment.In addition, also can just 10,11 right-hand side assemblies of input among Fig. 3 all be integrated with freewheeling circuit, flicker control circuit with integrated as a whole by the electroluminescent lamp three of its control; At each lamp group, a pedestal can be set, during use each lamp group directly inserted and get final product, be similar to the relation of traditional lamp holder and bulb.Can by simple plug operation, can be replaced by the flashing lamp group with any non-flashing lamp group as required this moment.

For lamp string shown in Figure 3, should connect dc source work, and should guarantee input 10 input positive supplies, output 11 input negative supplies.When being directly connected to AC power, by setting up a full-wave rectifying circuit, just being equivalent to provides dc source for circuit shown in Figure 3.

During concrete enforcement, can set up more flashing lamp group 102, or directly substitute non-flashing lamp group 101 with one or more flashing lamp groups 102, based on the needs of decorative effect, the quantity of flashing lamp group 102 can be less than the quantity of non-flashing lamp group 101 usually.In flashing lamp group 102, can only establish a LED, also two or three LED can be set; In non-flashing lamp group 101 more LED in parallel in the same way can be set also.

At embodiment shown in Figure 3, all available small-sized osram lamp of each LED wherein replaces, and also can will make the flashing lamp group with LED, and substitutes part bulb in traditional tengsten lamp string with one or more these type of flashing lamp groups.

Among the utility model embodiment two, but the circuit connecting relation of the lamp string of partly flickering is as shown in Figure 4, as can be seen from the figure, and comprising a plurality of non-flashing lamp groups 201 and a flashing lamp group 202.In flashing lamp group 202, comprise two LED, a flicker control circuit 203 and a freewheeling circuit 204 again.In the present embodiment, adopt capacitor C as continued flow component, when the flicker control circuit turn-offed the LED in this flashing lamp group, capacitor C produced the afterflow effect by charging process, thereby guarantees that other non-flashing lamp groups can work on.Remainder in the present embodiment and embodiment shown in Figure 3 are basic identical, and can do similar improvement, repeat no more herein.In the present embodiment, owing to be to adopt the capacitor C afterflow, so working power preferably by AC power being made half-wave or full-wave rectification gained, and should guarantee input 10 input positive supplies, output 11 input negative supplies.

Among the utility model embodiment three, but the circuit connecting relation of the lamp string of partly flickering is as shown in Figure 5, as can be seen from the figure, and comprising a plurality of non-flashing lamp groups 301 and a flashing lamp group 302.In flashing lamp group 302, comprise three LED, a flicker control circuit 303 and a freewheeling circuit 304 again.In the present embodiment, adopt capacitor C, diode D1, reach diode D2 as continued flow component.Wherein, diode D1 forward is connected between the anode of the first input end of this flashing lamp group and capacitor C; Diode D2 oppositely is connected between first, second input of this flashing lamp group.

Lamp string in the present embodiment should use AC power, in the positive half-wave stage, when the flicker control circuit turn-offs the LED in this flashing lamp group 303, produces the afterflow effect by diode D1 and capacitor C; In the negative half-wave stage, the LED in the flashing lamp group is no longer luminous, and realizes reverse afterflow by diode D2.

In the present embodiment, owing in each non-flashing lamp group 301 two LED reverse parallel connections are arranged all, so when directly connecting AC power, the positive half cycle of sinusoidal ac can make all LED of wherein forward connection luminous, the negative half period of AC power can make all LED that wherein oppositely connect luminous, that is to say that the positive half cycle and the negative half period of sinusoidal ac all have the LED operate as normal.With Fig. 3 and Fig. 4 by contrast, the lamp string luminous efficiency of present embodiment is higher, and can be because of only not utilizing half period to produce to make an uproar the ripple electric current.The flicker control circuit that cooperates with present embodiment if insert the red, green, blue three-color LED respectively, then can produce more changeable illusion effect as shown in Figure 9 under the control of flicker control circuit.

In embodiment four of the present utility model, substituted the commutation diode D2 among Fig. 5 with Zener diode Z2, concrete effect as shown in Figure 6, but the flicker control circuit only drives a LED in the present embodiment.

In embodiment five of the present utility model, substituted the Zener diode Z1 among Fig. 3 with resistance R, concrete effect is as shown in Figure 7.

Equally, for the foregoing description two, three, four, five, also available osram lamp substitutes LED wherein.

Claims

1. A partially flashable light string, which includes one or more branches;

A plurality of lamp groups are included in each branch, and the plurality of lamp groups are connected in series in sequence, and each lamp group includes at least one light-emitting lamp; it is characterized in that,

At least one of the plurality of light groups is a flashing light group, and the rest are non-flashing light groups;

Each of the flashing lamp groups further includes a flashing control circuit and a freewheeling circuit, and the first and second input terminals of the flashing lamp group drawn from two adjacent lamp groups are connected to the freewheeling circuit, The freewheeling circuit is connected to the flashing control circuit, and the flashing control circuit supplies power to the light-emitting lamps in the flashing lamp group.

2. The partly flashable lamp string according to claim 1, characterized in that, the freewheeling circuit comprises a Zener diode Z1, the cathode of which is connected to the first input terminal (10) of the flashing lamp group and connected to The positive terminal of the working power supply of the blinking control circuit is connected, and its positive pole is connected with the second input terminal (11) of the blinking light group and connected with the negative terminal of the working power supply of the blinking control circuit.

3. The partly flashable lamp string according to claim 1, characterized in that, the freewheeling circuit comprises a resistor R, one end of which is connected to the first input end (10) of the flashing lamp group and connected to the first input end (10) of the flashing lamp group. The positive end of the working power supply of the flickering control circuit is connected, and the other end is connected with the second input end (11) of the flickering lamp group and connected with the negative end of the working power supply of the flickering control circuit.

4. The partially flashable light string according to claim 1, characterized in that the freewheeling circuit comprises a capacitor C, the positive end of which is connected to the first input end (10) of the flashing light group and connected to the first input end (10) of the flashing light group. The positive terminal of the working power supply of the blinking control circuit is connected, and the negative terminal thereof is connected with the second input terminal (11) of the blinking lamp group and connected with the negative terminal of the working power supply of the blinking control circuit.

5. The partly flashable light string according to claim 4, characterized in that, in each of the flashing light groups, the freewheeling circuit further includes rectifier diodes D1 and D2; the diode D1 is forward connected Between the first input end of the flashing light group and the positive end of the capacitor C; the diode D2 is reversely connected between the first and second input ends of the flashing light group.

6. The partly flashable light string according to claim 4, characterized in that, in each of the flashing light groups, the freewheeling circuit further includes a rectifier diode D1 and a Zener diode Z2; the rectifier diode D1 is positively connected between the first input end (10) of the flashing light group and the positive end of the capacitor C; the Zener diode Z2 is reversely connected to the first and second input ends of the flashing light group (10,11).

7. The partially flickering light string according to any one of claims 1-6, wherein the light emitting lights in each light group are LED or tungsten bulbs.

8. The partially flickering light string according to claim 7, wherein each non-flickering light group includes a first LED and a protection diode connected in reverse parallel with the first LED ; The protection diode is a rectifier diode matching the first LED, or a Zener diode, or a switching diode, or a second LED.

9. The partly flashable light string according to claim 7, characterized in that, each said flashing light group is connected to the first input end (10) and the second input end ( 11) Connect.

10. The partially flickerable light string according to claim 7, characterized in that it includes a plurality of branches, and each branch is connected in parallel with each other on the circuit, and then connected to the common power cable.