CN201177186Y - A LED light string - Google Patents

Abstract

The utility model discloses a LED lamp string, which comprises a plurality of LED lamps connected in series, and is characterized in that each LED lamp is connected in parallel with a flow guide resistor or a voltage stabilizing tube which can conduct the whole circuit when the LED lamp is open; when one LED lamp in the lamp string is open-circuited in the use process, the resistor or the voltage stabilizing tube conducts current, so that the whole circuit can be kept conducted, other LED lamps can be normally used, and the phenomenon that the whole lamp string is not bright due to burning out of one LED lamp can be avoided; and because each LED is connected with a resistor or a voltage-stabilizing tube in parallel, the resistor or the voltage-stabilizing tube can play the roles of voltage stabilization and buffering when the voltage applied to the two ends of the lamp string fluctuates, thereby prolonging the service life of the LED.

Description

A LED light string

technical field

The utility model relates to a lamp string, in particular to a lamp string using LED as a light source.

Background technique

Due to the characteristics and advantages of light-emitting diodes (that is, LED lights) with long life, small size, low heat generation, low power consumption, fast response, no radiation and monochromatic light, light-emitting diodes have been widely used in various fields. In various fields, especially as an energy-saving product, it is gradually being used to replace fluorescent lamps or ordinary light bulbs as lighting sources. In the process of use, several LEDs are usually connected in series and then connected to a 110-220V power supply, so there is bound to be a problem: when a certain LED light in this LED light string is open circuited, the entire LED light string will appear. The phenomenon that the light string is not on.

Contents of the invention

In order to overcome the deficiencies of the prior art, the utility model provides an LED lamp string, which can still maintain the conduction of the entire circuit when a certain LED lamp is open circuit, so that other LED lamps can be used normally.

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

An LED lamp string, including several LED lamps connected in series, is characterized in that each LED lamp is connected in parallel with a conduction resistor or a voltage regulator tube that can conduct the entire circuit when the LED lamp is open.

The beneficial effects of the utility model are: the utility model adopts the above-mentioned structure, and when a certain LED lamp in the light string is open-circuited during use, the resistor or the voltage regulator tube conducts the current, thereby maintaining the conduction of the entire circuit, Make other LED lights can be used normally, so that the phenomenon that the whole light string will not be turned off due to the burnout of one LED light; When the voltage fluctuates, the resistor or the voltage regulator can play the role of voltage stabilization and buffering, thus prolonging the service life of the LED.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the schematic diagram of the utility model first embodiment;

Fig. 2 is a schematic diagram of the second embodiment of the utility model.

Detailed ways

Referring to Fig. 1 and Fig. 2, an LED lamp string disclosed by the utility model includes several LED lamps connected in series, each LED lamp is connected in parallel with a circuit breaker that can make the entire circuit conduct when the LED lamp is open. The conduction resistor R or the voltage regulator tube D, when an LED lamp in the light string is open-circuited during use, the resistance or the voltage regulator tube conducts current, so that the entire circuit can be kept on, so that other LED lights can In normal use, there will be no phenomenon that the entire light string does not light up due to a burnout of one LED light; and because each LED is connected in parallel with a resistor or a voltage regulator tube, when the voltage applied to both ends of the light string fluctuates, the resistance or The Zener tube can play the role of voltage stabilization and buffering, thus prolonging the service life of the LED.

The above description is only a preferred embodiment of the utility model, and the protection scope of the utility model cannot be limited by it. The utility model can also have other structural changes, such as adopting several LEDs connected in series and connected to the 110-220V drop Voltage or other low-voltage power supply low-voltage lines to be used as other purposes, also should be within the protection scope of the present utility model.

Claims (1)

1. a LED lamp string comprises some the LED lamps that are cascaded, and it is characterized in that being parallel with on each LED lamp the water conservancy diversion resistance or the voltage-stabiliser tube that can make the entire circuit conducting when this LED lamp open circuit.