CN201608948U

CN201608948U - High-voltage DC LED street lamp power supply system and street lamp

Info

Publication number: CN201608948U
Application number: CN2010201423034U
Authority: CN
Inventors: 邓国强; 徐灼辉
Original assignee: Dongguan Kingsun Optoelectronic Co Ltd
Current assignee: KINGSUN OPTOELECTRONIC CO., LTD.
Priority date: 2010-03-26
Filing date: 2010-03-26
Publication date: 2010-10-13
Anticipated expiration: 2020-03-26

Abstract

A high-voltage DC LED street lamp power supply system and a street lamp relate to the technology of street lamps for road transportation lighting. The power supply system comprises a high-power AC-DC converter and a power transmission circuit connecting the converter and all lamps; the lamps are connected in parallel with the circuit; the circuit of each LED street lamp comprises a constant-current circuit module and an LED chip array; the high-power converter converts alternating current of the power network into direct current, and supplies the direct current to all the LED street lamps; and the converter comprises a rectification circuit and can be provided with a filter circuit, a power factor correcting circuit and a conversion isolating circuit. The present LED street lamp adopts AC power supply, an AC/DC converting circuit and a constant-current circuit are arranged in each street lamp to achieve the purpose that the alternating current is converted into high-voltage direct current and then transferred to all street lamps, comparatively, the street lamp provided by the utility model is free of the AC/DC converting circuit, and only comprises a constant-current circuit for voltage reduction and current stabilization, thereby facilitating maintenance, and reducing product cost and maintenance cost.

Description

High voltage direct current LED street lamp power supply, road lamp power supply system and street lamp

Technical field

The street lamp that the utility model relates to a kind of circuit structure of high-power LED street lamp electric power system and powers thus belongs to the road traffic field of illumination lamp technology.

Background technology

The LED street lamp all is an Alternating Current Power Supply now, and AC/DC change-over circuit and constant-current circuit all are included in LED street lamp inside.LED as light source is in the direct current operating state, so the AC/DC change-over circuit must be arranged, because street lamp often is in high temperature, low temperature, high humidity, work under the abominable natural conditions such as circuit lightning surge, the probability that this AC/DC change-over circuit damages is higher, simultaneously because this part circuit and light fixture are integrative-structures, every high voltage direct current LED street lamp has an AC/DC transducer respectively, referring to Fig. 1, many and the dispersion of quantity, the maintenance management workload is big, maintain and replace all needs to call engineering truck, and some is local even need the road closure operation, and the Maintenance and Repair of this LED street lamp are difficulty, cost is higher.In this case, we are higher at key to the issue point AC/DC change-over circuit failure rate, the method that adopts the AC/DC change-over circuit to separate with light fixture, the LED light fixture is made the DC input light fixture that only contains the DC/DC change-over circuit, improve stability, the reliability of LED street lamp, reduce the damage probability in using.

The utility model content

At the problems referred to above, we provide a kind of high voltage direct current LED street lamp power supply, road lamp power supply system, with a high-power AC/DC transducer substitute original every the street lamp that disperses with small-power AC/DC transducer, be convenient to maintenance management and cost advantage more arranged.

We also provide a kind of street lamp by the power supply of high voltage direct current LED street lamp power supply, road lamp power supply system, street lamp no longer comprises the AC/DC ac-dc converter circuit, with a high-power AC/DC transducer substitute original every the street lamp that disperses with small-power AC/DC transducer, be convenient to maintenance management and cost advantage more arranged.

The technical solution of the utility model is, a kind of high voltage direct current LED street lamp power supply, road lamp power supply system, electric power system comprises a high-power AC/DC AC/DC changeover switch, the AC/DC AC/DC changeover switch LED multi-path street lamp circuit that is connected in parallel, the LED street lamp circuit in each loop comprises constant-current circuit module and the led chip array that is connected in series.

The above-mentioned high-power AC/DC AC/DC changeover switch filter circuit that is connected in parallel.

The above-mentioned high-power AC/DC AC/DC changeover switch power factor correction circuit that is connected in parallel.

The above-mentioned high-power AC/DC AC/DC changeover switch DC/DC buffer circuit that is connected in parallel.

The utility model also provides a kind of street lamp by the power supply of high voltage direct current LED street lamp power supply, road lamp power supply system, and the circuit structure of street lamp comprises constant-current circuit module and the led chip array that is connected in series, and the constant-current circuit module is powered by high-power AC/DC AC/DC changeover switch.

High voltage direct current LED street lamp power supply, road lamp power supply system and street lamp that the utility model provides, AC/DC AC/DC changeover switch with previous each street lamp loop, concentrate together and substitute by a bigger AC/DC transducer, by this high-power AC/DC transducer alternating current is converted on the LED street lamp that high voltage direct current is transported to each loop, loss is lower during because of high-pressure delivery, the LED street lamp of this moment has not comprised the AC/DC change-over circuit, only comprises the constant-current circuit that plays step-down and constant current effect.The AC/DC transducer that breaks down easily can directly keep in repair, and need not take road lamp body apart, and is easy to maintenance, reduces product cost.

Below in conjunction with accompanying drawing the most preferred technical scheme of the utility model is described in further detail.

Description of drawings

Fig. 1 is the schematic block circuit diagram of prior art high voltage direct current LED street lamp power supply, road lamp power supply system.

Fig. 2 is the schematic block circuit diagram of the utility model high voltage direct current LED street lamp power supply, road lamp power supply system.

Fig. 3 is the circuit theory diagrams of the utility model high voltage direct current LED street lamp power supply, road lamp power supply system.

Fig. 4 is the circuit diagram of the utility model high voltage direct current LED street lamp power supply, road lamp power supply system led street lamp.

Fig. 5 is the circuit theory diagrams of the utility model LED street lamp circuit constant-current circuit.

Fig. 6 is the circuit theory diagrams of first kind of embodiment of the utility model AC/DC AC/DC changeover switch.

Fig. 7 is the circuit theory diagrams of second kind of embodiment of the utility model AC/DC AC/DC changeover switch.

Fig. 8 is the circuit theory diagrams of the third embodiment of the utility model AC/DC AC/DC changeover switch.

Fig. 9 is the circuit theory diagrams of the 4th kind of embodiment of the utility model AC/DC AC/DC changeover switch.

Embodiment

In order to understand preferred version of the present utility model, make those skilled in the art can understand realization the utility model, see also Fig. 2 to Fig. 9.

High voltage direct current LED street lamp power supply, road lamp power supply system, electric power system comprises a high-power AC/DC AC/DC changeover switch 10, the AC/DC AC/DC changeover switch 10 LED multi-path street lamp circuit that is connected in parallel, the LED street lamp circuit in each loop comprises constant-current circuit module 20 and the led chip array 30 that is connected in series.

This novel high-power AC/DC AC/DC changeover switch has following numerous embodiments.

Referring to Fig. 5, LED street lamp circuit constant-current circuit 20.

Referring to Fig. 6, the high-power AC/DC AC/DC changeover switch filter circuit 40 that is connected in parallel.

Referring to Fig. 7, high-power AC/DC AC/DC changeover switch be connected in parallel filter circuit 40, DC/DC buffer circuit 50.

Referring to Fig. 8, high-power AC/DC AC/DC changeover switch be connected in parallel power factor correction circuit 60, filter circuit 40.

Referring to Fig. 9, high-power AC/DC AC/DC changeover switch be connected in parallel filter circuit 40, power factor correction circuit 60, DC/DC buffer circuit 50.

Referring to Fig. 4, the street lamp of the high voltage direct current LED street lamp power supply, road lamp power supply system power supply that the utility model provides, the circuit structure of street lamp comprises constant-current circuit module 20 and the led chip array 30 that is connected in series, and constant-current circuit module 20 is by high-power AC/DC AC/DC changeover switch 10 power supplies.

This novel LED street lamp loop number that relates to is decided on concrete road conditions, can be loop LED1, loop LED2, loop LED3 even to several feeder numbers.

Three-phase or two-phase alternating current input convert input current to the high voltage direct current input by the AC/DC transducer, directly receive on the LED street lamp then and power.The AC/DC transducer is made up of rectification circuit, and it is wherein arbitrary or whole further to have filter circuit, circuit of power factor correction, DC/DC conversion buffer circuit etc., to improve the stability of output current.

Claims

1. high voltage direct current LED street lamp power supply, road lamp power supply system, it is characterized in that: described electric power system comprises a high-power AC/DC AC/DC changeover switch, the AC/DC AC/DC changeover switch LED multi-path street lamp circuit that is connected in parallel, the LED street lamp circuit in each loop comprises constant-current circuit module and the led chip array that is connected in series.

2. high voltage direct current LED street lamp power supply, road lamp power supply according to claim 1 system is characterized in that: the described high-power AC/DC AC/DC changeover switch filter circuit that is connected in parallel.

3. high voltage direct current LED street lamp power supply, road lamp power supply according to claim 1 and 2 system is characterized in that: the described high-power AC/DC AC/DC changeover switch power factor correction circuit that is connected in parallel.

4. high voltage direct current LED street lamp power supply, road lamp power supply according to claim 3 system is characterized in that: the described high-power AC/DC AC/DC changeover switch DC/DC buffer circuit that is connected in parallel.

5. high voltage direct current LED street lamp power supply, road lamp power supply according to claim 2 system is characterized in that: the described high-power AC/DC AC/DC changeover switch DC/DC buffer circuit that is connected in parallel.

6. street lamp by high voltage direct current LED street lamp power supply, road lamp power supply system power supply, it is characterized in that: the circuit structure of described street lamp comprises constant-current circuit module and the led chip array that is connected in series, and the constant-current circuit module is powered by high-power AC/DC AC/DC changeover switch.