CN200994208Y

CN200994208Y - Light-emitting diode lamp string with on-state securing measure

Info

Publication number: CN200994208Y
Application number: CNU200620166699XU
Authority: CN
Inventors: 黄建肇
Original assignee: TAIXING TOY (SHENZHEN) CO Ltd
Current assignee: ZAIXING ELECTRONIC (SHENZHEN) CO., LTD.
Priority date: 2006-12-22
Filing date: 2006-12-22
Publication date: 2007-12-19
Anticipated expiration: 2016-12-22

Abstract

A light-emitting diode light string with conduction ensuring measure is mainly connected by plural light-emitting diodes to form a string of lights, the two ends of the light string are connected with power supply to form a loop; thereinto: each light-emitting diode on the light string is connected parallelly to a bypass component with both ends, the bypass component can be a voltage-regulating diode with higher turn-on voltage than the light-emitting diode; thus, when a random light-emitting diode on the light string is damaged, current can still go through the bypass component of the light-emitting diode to maintain the getting through of the power supply loop, thereby ensuring that the light string is still able to work when some light-emitting diodes are damaged.

Description

The LED light string of tool conducting insure measures

Technical field

The utility model relates to a kind of lamp string, even relate in particular to a kind of LED light string of taking series system to connect when having light-emitting diode to damage, still can guarantee the LED light string of the tool conducting insure measures of other light-emitting diode operate as normal.

Background technology

Because light-emitting diode has advantages such as low power consumption, long-life, and the exploitation appearance in succession of the light-emitting diode of present various coloured light quilt, the step that makes light-emitting diode be used in lighting use is further accelerated.Although light-emitting diode possesses primary condition and some advantage that is used in lighting use, but single light-emitting diode still is not enough to deal with general illumination functions, therefore must use the light-emitting diode of larger amt simultaneously, and identical with the principle of bulb connection, adopt series system to connect the lamp string, can strengthen voltage, if the conducting voltage of single light-emitting diode is 1.8V, if 5 of serial connections, this lamp string conducting voltage promptly becomes 9V, can directly be driven by a 9V power supply.But take series system to connect and have serious potential problems: promptly all be serially connected on the same electric power loop owing to all light-emitting diodes, when wherein having arbitrary light-emitting diode to damage, interrupt immediately in its loop, even other light-emitting diode is as excellent as before, this lamp string still can't operate as normal.

From the above, when LED light string takes series system to connect, there is arbitrary light-emitting diode damage promptly to cause the loop interruption to make the problem that whole lamp string can't operate as normal in the middle of must solving.

The utility model content

Technical problem underlying to be solved in the utility model is, overcome the above-mentioned defective that prior art exists, and provide a kind of LED light string of tool conducting insure measures, even when it makes a LED light string of taking series system to connect have light-emitting diode to damage, still can guarantee other light-emitting diode operate as normal.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of LED light string of tool conducting insure measures includes: a lamp string is to be interconnected with series system by several light-emitting diodes, and lamp string two ends are connected with power supply, to constitute the loop; It is characterized in that, also be provided with several bypass elements, take the two ends that are connected across each light-emitting diode respectively in parallel in mode one to one, each bypass elements is a voltage stabilizing didoe, its conducting voltage greater than the conducting voltage of light-emitting diode in parallel.

The LED light string of aforementioned tool conducting insure measures, wherein several light-emitting diodes are respectively the light-emitting diode of different color light, and it has different conducting voltage respectively.

The utility model utilize aforementioned in series loop the two ends mode of a bypass elements in parallel respectively of each light-emitting diode, all light-emitting diodes all just often on the loop, because of the conducting voltage of light-emitting diode is lower than bypass elements, so source current preferentially makes its conducting by light-emitting diode and lights, in case when having light-emitting diode to damage, then electric current changes by bypass elements and passes through promptly without light-emitting diode, do not interrupt to keep the loop, make the lamp string still can operate as normal.

Aforementioned several light-emitting diodes are respectively the light-emitting diode that can produce different color light, and it has different conducting voltage respectively.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a circuit diagram of the present utility model.

The number in the figure explanation:

10 lamp strings, 11 light-emitting diodes

20 bypass elements

Embodiment

As shown in Figure 1, be the detailed circuit diagram of the utility model one preferred embodiment, mainly form with several bypass elements 20 by a lamp string 10; Wherein:

This lamp string 10 is to be interconnected with series system by several light-emitting diodes 11, and lamp string 10 two ends are for being connected with power supply with the formation loop; These several light-emitting diodes 11 can be has identical conducting voltage with a shade, also can be the light-emitting diode that can produce different color light, when light-emitting diode 11 can produce different color light, its conducting voltage also has difference, in the present embodiment, each light-emitting diode 11 is a different color light on the lamp string 10.

Aforementioned each bypass elements 20 is the two ends that are connected in parallel on each light-emitting diode 11 in mode one to one respectively, in the present embodiment, this bypass elements 20 is to be made of a voltage stabilizing didoe, this voltage stabilizing didoe can have different breakdown voltages, as for how selecting its breakdown voltage, on its conducting voltage of light-emitting diode in parallel decide, more specifically, for making the lamp string 10 still can normal operation under general situation, the conducting voltage of each bypass elements 20 must greater than the conducting voltage of light-emitting diode 11 in parallel; And as previously mentioned, in the present embodiment, lamp string 10 is that the light-emitting diode 11 by different color light composes in series, so the conducting voltage of each light-emitting diode 11 is not quite similar, so constitute the voltage stabilizing didoe of aforementioned bypass elements 20, its breakdown voltage promptly cooperate respectively and greater than light-emitting diode 11 in parallel.

Can understand the detailed construction of the utility model one preferred embodiment by above-mentioned explanation, existing its working method is described below:

Each light-emitting diode 11 in 10 series loops of lamp string all just often, because of the conducting voltage of light-emitting diode 11 conducting voltage less than bypass elements 20, so source current certainly will be passed through by the lower light-emitting diode 11 of impedance, all light-emitting diodes 11 on the loop thereby conducting and lighting one by one, in case when having light-emitting diode 11 to damage, because of the breakdown voltage of supply voltage, so bypass elements 20 conductings greater than bypass elements 20, electric power loop does not interrupt, and lamp string 10 still can operate as normal.

From the above, the utility model is a bypass elements in parallel on each light-emitting diode of Series lamp string, can make light-emitting diode just often, electric current follows original loop to be passed through, in case light-emitting diode damages, the guiding path of bypass then is provided by bypass elements, electric power loop can not interrupted because of local luminous diode damages, guarantee that the lamp string still can operate as normal when the minority light-emitting diode damages.Further, when adopting voltage stabilizing didoe as bypass elements because it possesses stabilized voltage characteristic, even and can make and have light-emitting diode to damage on the loop, it is stable still to keep voltage, has the fail safe of height.

Claims

1. the LED light string of a tool conducting insure measures includes:

One lamp string is to be interconnected with series system by several light-emitting diodes, and lamp string two ends are connected with power supply, to constitute the loop; It is characterized in that, also be provided with

Several bypass elements are taked the two ends that are connected across each light-emitting diode respectively in parallel in mode one to one, and each bypass elements is a voltage stabilizing didoe, its conducting voltage greater than the conducting voltage of light-emitting diode in parallel.

2. according to the LED light string of the described tool conducting insure measures of claim 1, it is characterized in that described several light-emitting diodes are respectively the light-emitting diode of different color light, it has different conducting voltage respectively.